This resource is a member of a series. The TIGER/Line shapefiles and related database files (.dbf) are an extract of selected geographic and cartographic information from the U.S. Census Bureau's Master Address File / Topologically Integrated Geographic Encoding and Referencing (MAF/TIGER) System (MTS). The MTS represents a seamless national file with no overlaps or gaps between parts, however, each TIGER/Line shapefile is designed to stand alone as an independent data set, or they can be combined to cover the entire nation. State Legislative Districts (SLDs) are the areas from which members are elected to state legislatures. The SLDs embody the upper (senate - SLDU) and lower (house - SLDL) chambers of the state legislature. Nebraska has a unicameral legislature, and the District of Columbia has a single council, both of which the Census Bureau treats as upper-chamber legislative areas for the purpose of data presentation. A unique three-character census code, identified by state participants, is assigned to each SLD within a state. States that had SLDU updates between the previous and current session include Georgia, Minnesota, Montana, North Carolina, North Dakota, Ohio, Washington, and Wisconsin. In Connecticut, Illinois, Louisiana, New Hampshire, Wisconsin, and Puerto Rico, the Redistricting Data Program (RDP) participant did not define the SLDUs to cover the entirety of the state or state equivalent area. In the areas with no SLDUs defined, the code ""ZZZ"" has been assigned, which is treated as a single SLDU for purposes of data presentation. There are no SLDU TIGER/Line shapefiles for the Island Areas (American Samoa, Guam, the Commonwealth of the Northern Mariana Islands, and the U.S. Virgin Islands). The state legislative district boundaries reflect information provided to the Census Bureau by the states by May 31, 2024. Note: Michigan is required by court order to redraw their state senate districts. However, these new SLDUs were not drawn by May 31, 2024, and will not be used until the next SLDU elections in 2026.

Final approved map by the 2020 California Citizens Redistricting Commission for California's United States Congressional Districts; the authoritative and official delineations of California's United States Congressional Districts drawn during the 2020 redistricting cycle. The Citizens Redistricting Commission for the State of California has created statewide district maps for the State Assembly, State Senate, State Board of Equalization, and United States Congress in accordance, with the provisions of Article XXI of the California Constitution. The Commission has approved the final maps and certified them to the Secretary of State.Line drawing criteria included population equality as required by the U.S. Constitution, the Federal Voting Rights Act, geographic contiguity, geographic integrity, geographic compactness, and nesting. Geography was defined by U.S. Census Block geometry.Each of the 52 Congressional districts apportioned to California have an ideal population of 760,066, and the Commission adhered to federal constitutional mandates by requiring a district population deviation of no more than +/- one person. These districts also posed some of the Commission’s biggest challenges, and, because of strict population equality requirements, resulted in many more splits of counties, cities, neighborhoods, and communities of interest compared to State Assembly or Senate plans.

This resource is a member of a series. The TIGER/Line shapefiles and related database files (.dbf) are an extract of selected geographic and cartographic information from the U.S. Census Bureau's Master Address File / Topologically Integrated Geographic Encoding and Referencing (MAF/TIGER) System (MTS). The MTS represents a seamless national file with no overlaps or gaps between parts, however, each TIGER/Line shapefile is designed to stand alone as an independent data set, or they can be combined to cover the entire nation. State Legislative Districts (SLDs) are the areas from which members are elected to state legislatures. The SLDs embody the upper (senate - SLDU) and lower (house - SLDL) chambers of the state legislature. Nebraska has a unicameral legislature, and the District of Columbia has a single council, both of which the Census Bureau treats as upper-chamber legislative areas for the purpose of data presentation. A unique three-character census code, identified by state participants, is assigned to each SLD within a state. States that had SLDU updates between the previous and current session include Georgia, Minnesota, Montana, North Carolina, North Dakota, Ohio, Washington, and Wisconsin. In Connecticut, Illinois, Louisiana, New Hampshire, Wisconsin, and Puerto Rico, the Redistricting Data Program (RDP) participant did not define the SLDUs to cover the entirety of the state or state equivalent area. In the areas with no SLDUs defined, the code ""ZZZ"" has been assigned, which is treated as a single SLDU for purposes of data presentation. There are no SLDU TIGER/Line shapefiles for the Island Areas (American Samoa, Guam, the Commonwealth of the Northern Mariana Islands, and the U.S. Virgin Islands). The state legislative district boundaries reflect information provided to the Census Bureau by the states by May 31, 2024. Note: Michigan is required by court order to redraw their state senate districts. However, these new SLDUs were not drawn by May 31, 2024, and will not be used until the next SLDU elections in 2026.

The downloadable ZIP file contains Esri shapefiles and PDF maps. Contains the information used to determine the location of the new legislative and congressional district boundaries for the state of Idaho as adopted by Idaho's first Commission on Redistricting on March 9, 2002. Contains viewable and printable legislative and congressional district maps, viewable and printable reports, and importable geographic data files.These data were contributed to INSIDE Idaho at the University of Idaho Library in 2001. CD/DVD -ROM availability: https://alliance-primo.hosted.exlibrisgroup.com/permalink/f/m1uotc/CP71156191150001451These files were created by a six-person, by-partisan commission, consisting of six commission members, three democrats and three republicans. This commission was given 90 days to redraw congressional and legislative district boundaries for the state of Idaho. Due to lawsuits, the process was extended. This legislative plan was approved by the commission on March 9th, 2002 and was previously called L97. All digital data originates from TIGER/Line files and 2000 U.S. Census data.Frequently asked questions:How often are Idaho's legislative and congressional districts redrawn? Once every ten years after each census, as required by law, or when directed by the Idaho Supreme Court. The most recent redistricting followed the 2000 census. Redistricting is not expected to occur again in Idaho until after the 2010 census. Who redrew Idaho's legislative and congressional districts? In 2001, for the first time, Idaho used a citizens' commission to redraw its legislative and congressional district boundaries. Before Idaho voters amended the state Constitution in 1994 to create a Redistricting Commission, redistricting was done by a committee of the Idaho Legislature. The committee's new district plans then had to pass the Legislature before becoming law. Who was on the Redistricting Commission? Idaho's first Commission on Redistricting was composed of Co-Chairmen Kristi Sellers of Chubbuck and Tom Stuart of Boise and Stanley. The other four members were Raymond Givens of Coeur d'Alene, Dean Haagenson of Hayden Lake, Karl Shurtliff of Boise, John Hepworth of Buhl (who resigned effective December 4, 2001), and Derlin Taylor of Burley (who was appointed to replace Mr. Hepworth). What are the requirements for being a Redistricting Commissioner? According to Idaho Law, no person may serve on the commission who: 1. Is not a registered voter of the state at the time of selection; or 2. Is or has been within one (1) year a registered lobbyist; or 3. Is or has been within two (2) years prior to selection an elected official or elected legislative district, county or state party officer. (This requirement does not apply to precinct committeepersons.) The individual appointing authorities may consider additional criteria beyond these statutory requirements. Idaho law also prohibits a person who has served on the Redistricting Commission from serving in either house of the legislature for five years following their service on the commission. When did Idaho's first Commission on Redistricting meet? Idaho law allows the Commission only 90 days to conduct its business. The Redistricting Commission was formed on June 5, 2001. Its 90-day time period would expire on September 3, 2001. After holding hearings around the state in June and July, a majority of the Commission voted to adopt new legislative and congressional districts on August 22, 2001. On November 29th, the Idaho Supreme Court ruled the Commission's legislative redistricting plan unconstitutional and directed them to reconvene and adopt an alternative plan. The Commission did so, adopting a new plan on January 8, 2000. The Idaho Supreme Court found the Commission's second legislative map unconstitutional on March 1, 2002 and ordered the Commission to try again. The Commission adopted a third plan on March 9, 2002. The Supreme Court denied numerous challenges to this third map. It then became the basis for the 2002 primary and General elections and is expected to be used until the 2012 elections. What is the basic timetable for Idaho to redraw its legislative and congressional districts?Typically, and according to Idaho law, the Redistricting Commission cannot be formally convened until after Idaho has received the official census counts and not before June 1 of a year ending in one. Idaho's first Commission on redistricting was officially created on June 5, 2001. By law, a Commission then has 90 days (or until September 3, 2001 in the case of Idaho's first Commission) to approve new legislative and congressional district boundaries based on the most recent census figures. If at least four of the six commissioners fail to approve new legislative and congressional district plans before that 90-day time period expires, the Commission will cease to exist. The law is silent as to what happens next. Could you summarize the important dates for Idaho's first Commission on Redistricting one more time please? After January 1, 2001 but before April 1, 2001: As required by federal law, the Census Bureau must deliver to the states the small area population counts upon which redistricting is based. The Census Bureau determines the exact date within this window when Idaho will get its population figures. Idaho's were delivered on March 23, 2001. Why conduct a census anyway? The original and still primary reason for conducting a national census every ten years is to determine how the 435 seats in the United States House of Representatives are to be apportioned among the 50 states. Each state receives its share of the 435 seats in the U.S. House based on the proportion of its population to that of the total U.S. population. For example, the population shifts during the 1990's resulted in the Northeastern states losing population and therefore seats in Congress to the Southern and the Western states. What is reapportionment? Reapportionment is a federal issue that applies only to Congress. It is the process of dividing up the 435 seats in the U.S. House of Representatives among the 50 states based on each state's proportion of the total U.S. population as determined by the most recent census. Apportionment determines the each state's power, as expressed by the size of their congressional delegation, in Congress and, through the electoral college, directly affects the selection of the president (each state's number of votes in the electoral college equals the number of its representatives and senators in Congress). Like all states, Idaho has two U.S. senators. Based on our 1990 population of 1,006,000 people and our 2000 population of 1,293,953, and relative to the populations of the other 49 states, Idaho will have two seats in the U.S. House of Representatives. Even with the state's 28.5% population increase from 1990 to 2000, Idaho will not be getting a third seat in the U.S. House of Representatives. Assuming Idaho keeps growing at the same rate it did through the decade of the 1990's, it will likely be 30 or 40 years (after 3 or 4 more censuses) before Idaho gets a third congressional seat. What is redistricting? Redistricting is the process of redrawing the boundaries of legislative and congressional districts within each state to achieve population equality among all congressional districts and among all legislative districts. The U.S. Constitution requires this be done for all congressional districts after each decennial census. The Idaho Constitution also requires that this be done for all legislative districts after each census. The democratic principle behind redistricting is "one person, one vote." Requiring that districts be of equal population ensures that every elected state legislator or U.S. congressman represents very close to the same number of people in that state, therefore, each citizen's vote will carry the same weight. How are reapportionment and redistricting related to the census? The original and still primary reason for conducting a census every ten years is to apportion the (now) 435 seats in the U.S. House of Representatives among the several states. The census records population changes and is the legally recognized basis for redrawing electoral districts of equal population. Why is redistricting so important? In a democracy, it is important for all citizens to have equal representation. The political parties also see redistricting as an opportunity to draw districts that favor electing their members and, conversely, that are unfavorable for electing their political opposition. (It's for this reason that redistricting has been described as "the purest form of political bloodsport.") What is PL 94-171? Public Law (PL) 94-171 (Title 13, United States Code) was enacted by Congress in 1975. It was intended to provide state legislatures with small-area census population totals for use in redistricting. The law's origins lie with the "one person, one vote" court decisions in the 1960's. State legislatures needed to reconcile Census Bureau's small geographic area boundaries with voting tabulation districts (precincts) boundaries to create legislative districts with balanced populations. The Census Bureau worked with state legislatures and others to meet this need beginning with the 1980 census. The resulting Public Law 94-171 allows states to work voluntarily with the Census Bureau to match voting district boundaries with small-area census boundaries. With this done, the Bureau can report to those participating states the census population totals broken down by major race group and Hispanic origin for the total population and for persons aged 18 years and older for each census subdivision. Idaho participated in the Bureau's Census 2000 Redistricting Data Program and, where counties used visible features to delineate precinct boundaries, matched those boundaries with census reporting areas. In those instances where counties did not use visible features to

Abstract: This data set shows the results for the redistricting of U.S. Congressional District boundaries for the Indiana for 2011 through 2021. Republicans who control the Indiana House and Senate from the 117th General Assembly oversaw the drawing of new maps in the Spring of 2011 for all 100 state house and 50 state senate districts and Indiana's nine congressional seats. New political districts are drawn every 10 years to incorporate information from the latest U.S. Census.

This resource is a member of a series. The TIGER/Line shapefiles and related database files (.dbf) are an extract of selected geographic and cartographic information from the U.S. Census Bureau's Master Address File / Topologically Integrated Geographic Encoding and Referencing (MAF/TIGER) System (MTS). The MTS represents a seamless national file with no overlaps or gaps between parts, however, each TIGER/Line shapefile is designed to stand alone as an independent data set, or they can be combined to cover the entire nation. State Legislative Districts (SLDs) are the areas from which members are elected to state legislatures. The SLDs embody the upper (senate - SLDU) and lower (house - SLDL) chambers of the state legislature. Nebraska has a unicameral legislature, and the District of Columbia has a single council, both of which the Census Bureau treats as upper-chamber legislative areas for the purpose of data presentation. A unique three-character census code, identified by state participants, is assigned to each SLD within a state. States that had SLDU updates between the previous and current session include Georgia, Minnesota, Montana, North Carolina, North Dakota, Ohio, Washington, and Wisconsin. In Connecticut, Illinois, Louisiana, New Hampshire, Wisconsin, and Puerto Rico, the Redistricting Data Program (RDP) participant did not define the SLDUs to cover the entirety of the state or state equivalent area. In the areas with no SLDUs defined, the code ""ZZZ"" has been assigned, which is treated as a single SLDU for purposes of data presentation. There are no SLDU TIGER/Line shapefiles for the Island Areas (American Samoa, Guam, the Commonwealth of the Northern Mariana Islands, and the U.S. Virgin Islands). The state legislative district boundaries reflect information provided to the Census Bureau by the states by May 31, 2024. Note: Michigan is required by court order to redraw their state senate districts. However, these new SLDUs were not drawn by May 31, 2024, and will not be used until the next SLDU elections in 2026.

This data set shows Indiana's nine district boundaries (redistricted boundaries were adopted in May 2011 until 2021) for the 115th U.S. Congress and provides the name, party affiliation, and additional contact information for each of the representatives. The 115th U.S. Congress, Session I began on January 3, 2017. NOTE: A new Congress begins at noon January 3 of each odd-numbered year following a general election, unless it designates a different day by law. A Congress lasts for two years, with each year constituting a separate session. NOTE: Redistricting of all Indiana legislative boundaries were adopted in May 2011, and will be used from 2011 through 2021. Republicans who controlled the Indiana House and Senate from the 117th General Assembly oversaw the drawing of new maps in the Spring of 2011 for all 100 state house and 50 state senate districts and Indiana's nine congressional seats. New political districts are drawn every 10 years to incorporate information from the latest U.S. Census.

This data set shows Indiana's nine district boundaries (redistricted boundaries were adopted in May 2011 until 2021) for the 116th U.S. Congress and provides the name, party affiliation, and additional contact information for each of the representatives. The 116th U.S. Congress, Session I began on January 3, 2019. NOTE: A new Congress begins at noon January 3 of each odd-numbered year following a general election, unless it designates a different day by law. A Congress lasts for two years, with each year constituting a separate session. NOTE: Redistricting of all Indiana legislative boundaries were adopted in May 2011, and will be used from 2011 through 2021. Republicans who controlled the Indiana House and Senate from the 117th General Assembly oversaw the drawing of new maps in the Spring of 2011 for all 100 state house and 50 state senate districts and Indiana's nine congressional seats. New political districts are drawn every 10 years to incorporate information from the latest U.S. Census.

Last update: February 3, 2022 (minor geometry cleanup: snapping, remove topology slivers, etc.)This data includes the political districts used for the United States Congressional districts in Utah (US House of Representatives). The US Congress Districts 2022 to 2032 will be used for election purposes beginning January 1, 2022. Elected officials began representing these districts in January 2023. These boundaries supersede the US Congressional Districts that were used in 2012-2021Statewide Political District Boundaries are drawn by the Utah Legislature and adopted into state law as part of the decennial redistricting process that began in 2021. These districts represent US House of Representatives (Congressional) Districts as per Census Block Assignment file enrolled with HB2004.For information and downloads on all political districts check UGRC data page https://gis.utah.gov/data/political/2022-2032-house-senate-congressional-districts/

Abstract (en): This study is part of a time-series collection of national surveys fielded continuously since 1952. The election studies are designed to present data on Americans' social backgrounds, enduring political predispositions, social and political values, perceptions and evaluations of groups and candidates, opinions on questions of public policy, and participation in political life. In this post-election survey, major emphasis was placed on the respondent's evaluation of their congressional district's candidates, both the incumbent and opponent, along several dimensions. As in previous American National Election studies, this survey included a series of questions on the media coverage of the campaigns and scales that measured the respondent's positions on major social issues, including urban unrest, protection of the rights of the accused, aid to minority groups, government insurance plan, and women's role in society. The perceived position of the political parties, as well as certain political leaders, on these issues was also ascertained. In addition to the survey data, this file also contains several contextual components consisting of: (1) historical election returns at the state, congressional district, and county levels for elections to the offices of president, governor, and United States senator and representative, 1972-1976, (2) 1978 election returns for primary and general elections to the same offices, including precinct level returns, (3) voter validation variables, (4) information about media structure in the respondent's locale, (5) incumbent characteristics, including information pertaining to the incumbent U.S. representatives of the 95th Congress from the 108 congressional districts sampled in the survey (a major feature of this component is a series of performance ratings that each member of Congress received from certain interest groups and from the Congressional Quarterly), (6) candidate characteristics that apply to the Democratic and Republican candidates for the office of U.S. representative in the 1978 general elections (the latter data were obtained from a 1978 candidate questionnaire that was administered by Congressional Quarterly, Inc.), (7) information prepared by the Federal Election Commission on campaign expenditures and contributions for the offices of U.S. senator and U.S. representative, and (8) U.S. Census Bureau data containing social, economic, and demographic information recorded for the respondent's place of residence. Some of the Census data present information at the congressional district level drawn from the Congressional District Data Book (93rd Congress), as well as county-level Census tabulations prepared from the 1972 County and City Data Book. Additional information includes campaign materials collected from the headquarters of the Democratic and Republican congressional candidates, such as what types of campaign material existed and in how many varieties. Additionally, thematic dimensions of the campaign were coded from the campaign materials. ICPSR data undergo a confidentiality review and are altered when necessary to limit the risk of disclosure. ICPSR also routinely creates ready-to-go data files along with setups in the major statistical software formats as well as standard codebooks to accompany the data. In addition to these procedures, ICPSR performed the following processing steps for this data collection: Performed consistency checks.. All United States citizens of voting age residing in households. Probability sample of both United States citizens and congressional districts. The sample did not permit estimates of each district's constituency. 2015-11-10 The study metadata was updated2000-03-21 The data for this study are now available in SAS transport and SPSS export formats in addition to the ASCII data file, and a PDF version of the data collection instrument is now available. Variables in the dataset have been renumbered to the following format: 2-digit (or 2-character) year prefix + 4 digits + [optional] 1-character suffix. Dataset ID and version variables also have been added. For several districts, it was discovered that race (V4) was incorrectly assigned in the 1978 data. In MS03, 24 cases have been recoded to 12. In NY19, 9 cases were recoded to 14, and in NY38, 14 cases were recoded to 24. Also, in case 1352, the congressional district was recoded to district 4. In addition, the six supplementary files containing United States Census Bure...

The 83rd Legislature, 1st Called Session, enacted S.B. 3 (PLAN H358), the plan used to elect members to the Texas House from 2014-2018. The U.S. District Court for the Western District of Texas ordered changes to districts 90, 97 and 99 in Tarrant County for the 2020 elections. The resulting statewide plan (PLAN H414) is effective January 2021. PLAN H2100 is the representation of the current state house districts drawn on 2020 census geography. Texas has 150 state representative districts. Each district has an ideal 2020 census population of 194,303. For more information, visit https://redistricting.capitol.texas.gov/Current-districts#st-house-section

This data set shows the results for the redistricting of legislative boundaries for the Indiana House of Representatives for 2011 through 2021. Republicans who control the Indiana House and Senate oversaw the drawing of new maps in the Spring of 2011 for all 100 state house and 50 state senate districts and Indiana's nine congressional seats. New political districts are drawn every 10 years to incorporate information from the latest U.S. Census. Representative names and party affiliations were updated 4/2015 to reflect 119th session of the Indiana General Assembly.

From 2012 to 2022, Utah was comprised of 4 Congressional Districts for purposes of electing members to the US House of Representatives and defining constituent areas for each seat.

Statewide Political District Boundaries were drawn by the Utah Legislature and adopted into state law as part of the decennial redistricting process that began in 2011.

These districts represent US House of Representatives (Congressional) Districts as per Census Block Assignment file enrolled with SB3002S19 (MD5 Security ID Code: d7ad4010744b340539a41b596a9b04d0) and November 2011 adjustments to remove residential splits and to align to a more accurate representation of Utah's county boundaries in areas where the district boundaries follow county lines.

Last update: February 3, 2022 (minor geometry cleanup: snapping, remove topology slivers, etc.)This dataset includes the political districts used for the Utah State Legislature. Utah House Districts 2022 to 2032 will be used for election purposes beginning January 1, 2022. Elected officials began representing these districts in January 2023. These boundaries supersede the State House Districts that were used in 2012-2021. Statewide Political District Boundaries are drawn by the Utah Legislature and adopted into state law as part of the decennial redistricting process that began in 2021. These districts represent the Utah House Districts, as per the Census Block Assignment file, enrolled with HB2005.For information and downloads on all political districts check UGRC data page https://gis.utah.gov/data/political/2022-2032-house-senate-congressional-districts/

description: This data set shows the results for the redistricting of legislative boundaries for the Indiana Senate for 2011 through 2021. Republicans who control the Indiana House and Senate from the 117th General Assembly oversaw the drawing of new maps in the Spring of 2011 for all 100 state house and 50 state senate districts and Indiana's nine congressional seats. New political districts are drawn every 10 years to incorporate information from the latest U.S. Census.; abstract: This data set shows the results for the redistricting of legislative boundaries for the Indiana Senate for 2011 through 2021. Republicans who control the Indiana House and Senate from the 117th General Assembly oversaw the drawing of new maps in the Spring of 2011 for all 100 state house and 50 state senate districts and Indiana's nine congressional seats. New political districts are drawn every 10 years to incorporate information from the latest U.S. Census.

Final approved map by the 2020 California Citizens Redistricting Commission for the California State Assembly; the authoritative and official delineations of the California State Assembly drawn during the 2020 redistricting cycle. The Citizens Redistricting Commission for the State of California has created statewide district maps for the State Assembly, State Senate, State Board of Equalization, and United States Congress in accordance, with the provisions of Article XXI of the California Constitution. The Commission has approved the final maps and certified them to the Secretary of State.Line drawing criteria included population equality as required by the U.S. Constitution, the Federal Voting Rights Act, geographic contiguity, geographic integrity, geographic compactness, and nesting. Geography was defined by U.S. Census Block geometry.80 Assembly districts have an ideal population of around 500,000 people each, and in consideration of population equality, the Commission chose to limit the population deviation range to as close to zero percent as practicable. With these districts, the Commission was able to respect many local communities of interest and group similar communities; however, it was more difficult to keep densely populated counties, cities, neighborhoods, and larger communities of interest whole due to the district size and correspondingly smaller number allowable in the population deviation percentage.

The New Hampshire House of Representatives Floterial District Boundaries, 2012, contains "floterial" district boundaries drawn by the New Hampshire Legislature based on the 2010 US Census population count. Floterial districts overlay other NH House of Representatives districts ("base" districts), which are available from companion shape file NHHouseDists2012. Both shape files are required to depict all NH House of Representatives districts. District boundaries were derived by applying district codes retrieved from the NH Secretary of State web site to the geometry provided by the GRANIT town boundary layer (PBNH).

This resource is a member of a series. The TIGER/Line shapefiles and related database files (.dbf) are an extract of selected geographic and cartographic information from the U.S. Census Bureau's Master Address File / Topologically Integrated Geographic Encoding and Referencing (MAF/TIGER) System (MTS). The MTS represents a seamless national file with no overlaps or gaps between parts, however, each TIGER/Line shapefile is designed to stand alone as an independent data set, or they can be combined to cover the entire nation. State Legislative Districts (SLDs) are the areas from which members are elected to state legislatures. The SLDs embody the upper (senate - SLDU) and lower (house - SLDL) chambers of the state legislature. Nebraska has a unicameral legislature, and the District of Columbia has a single council, both of which the Census Bureau treats as upper-chamber legislative areas for the purpose of data presentation. A unique three-character census code, identified by state participants, is assigned to each SLD within a state. States that had SLDU updates between the previous and current session include Georgia, Minnesota, Montana, North Carolina, North Dakota, Ohio, Washington, and Wisconsin. In Connecticut, Illinois, Louisiana, New Hampshire, Wisconsin, and Puerto Rico, the Redistricting Data Program (RDP) participant did not define the SLDUs to cover the entirety of the state or state equivalent area. In the areas with no SLDUs defined, the code ""ZZZ"" has been assigned, which is treated as a single SLDU for purposes of data presentation. There are no SLDU TIGER/Line shapefiles for the Island Areas (American Samoa, Guam, the Commonwealth of the Northern Mariana Islands, and the U.S. Virgin Islands). The state legislative district boundaries reflect information provided to the Census Bureau by the states by May 31, 2024. Note: Michigan is required by court order to redraw their state senate districts. However, these new SLDUs were not drawn by May 31, 2024, and will not be used until the next SLDU elections in 2026.

This resource is a member of a series. The TIGER/Line shapefiles and related database files (.dbf) are an extract of selected geographic and cartographic information from the U.S. Census Bureau's Master Address File / Topologically Integrated Geographic Encoding and Referencing (MAF/TIGER) System (MTS). The MTS represents a seamless national file with no overlaps or gaps between parts, however, each TIGER/Line shapefile is designed to stand alone as an independent data set, or they can be combined to cover the entire nation. State Legislative Districts (SLDs) are the areas from which members are elected to state legislatures. The SLDs embody the upper (senate - SLDU) and lower (house - SLDL) chambers of the state legislature. Nebraska has a unicameral legislature, and the District of Columbia has a single council, both of which the Census Bureau treats as upper-chamber legislative areas for the purpose of data presentation. A unique three-character census code, identified by state participants, is assigned to each SLD within a state. States that had SLDU updates between the previous and current session include Georgia, Minnesota, Montana, North Carolina, North Dakota, Ohio, Washington, and Wisconsin. In Connecticut, Illinois, Louisiana, New Hampshire, Wisconsin, and Puerto Rico, the Redistricting Data Program (RDP) participant did not define the SLDUs to cover the entirety of the state or state equivalent area. In the areas with no SLDUs defined, the code ""ZZZ"" has been assigned, which is treated as a single SLDU for purposes of data presentation. There are no SLDU TIGER/Line shapefiles for the Island Areas (American Samoa, Guam, the Commonwealth of the Northern Mariana Islands, and the U.S. Virgin Islands). The state legislative district boundaries reflect information provided to the Census Bureau by the states by May 31, 2024. Note: Michigan is required by court order to redraw their state senate districts. However, these new SLDUs were not drawn by May 31, 2024, and will not be used until the next SLDU elections in 2026.