2021 Citizen Voting Age Population (CVAP) Data for Michigan from the 2017-2021 American Community Survey (ACS) 5 Year Estimates at the Block Group level ##Redistricting Data Hub (RDH) Retrieval Date 02/14/23 ##Sources CVAP Data is from the Census Citizen Voting Age Population by Race and Ethnicity [website](https://www.census.gov/programs-surveys/decennial-census/about/voting-rights/cvap.2021.html). Boundary shapefile is from the US Census Bureau via the Redistricting Data Hub. ##Fields Field Name Description GEOID20 Unique Identifier STATEFP20 State FIPS Code STATE State Name COUNTYFP20 County FIPS Code COUNTY Name of the County C_TOT21 Citizen Estimate for Total CTOTMOE Citizen Margin of Error for Total C_NHS21 Citizen Estimate for Not Hispanic or Latino CNHSMOE Citizen Margin of Error for Not Hispanic or Latino C_AIA21 Citizen Estimate for American Indian or Alaska Native Alone or In Combination CAIAMOE Citizen Margin of Error for American Indian or Alaska Native Alone or In Combination C_ASN21 Citizen Estimate for Asian Alone or In Combination CASNMOE Citizen Margin of Error for Asian Alone or In Combination C_BLK21 Citizen Estimate for Black or African American Alone or In Combination CBLKMOE Citizen Margin of Error for Black or African American Alone or In Combination C_NHP21 Citizen Estimate for Native Hawaiian or Other Pacific Islander Alone CNHPMOE Citizen Margin of Error for Native Hawaiian or Other Pacific Islander Alone C_WHT21 Citizen Estimate for White Alone CWHTMOE Citizen Margin of Error for White Alone C_AIW21 Citizen Estimate for American Indian or Alaska Native and White CAIWMOE Citizen Margin of Error for American Indian or Alaska Native and White C_ASW21 Citizen Estimate for Asian and White CASWMOE Citizen Margin of Error for Asian and White C_BLW21 Citizen Estimate for Black or African American and White CBLWMOE Citizen Margin of Error for Black or African American and White C_AIB21 Citizen Estimate for American Indian or Alaska Native and Black or African American CAIBMOE Citizen Margin of Error for American Indian or Alaska Native and Black or African American C_2OM21 Citizen Estimate for Remainder of Two or More Race Responses C2OMMOE Citizen Margin of Error for Remainder of Two or More Race Responses C_HSP21 Citizen Estimate for Hispanic or Latino CHSPMOE Citizen Margin of Error for Hispanic or Latino CVAP_TOT21 CVAP Estimate for Total CVAPTOTMOE CVAP Margin of Error for Total CVAP_NHS21 CVAP Estimate for Not Hispanic or Latino CVAPNHSMOE CVAP Margin of Error for Not Hispanic or Latino CVAP_AIA21 CVAP Estimate for American Indian or Alaska Native Alone or In Combination CVAPAIAMOE CVAP Margin of Error for American Indian or Alaska Native Alone or In Combination CVAP_ASN21 CVAP Estimate for Asian Alone or In Combination CVAPASNMOE CVAP Margin of Error for Asian Alone or In Combination CVAP_BLK21 CVAP Estimate for Black or African American Alone or In Combination CVAPBLKMOE CVAP Margin of Error for Black or African American Alone or In Combination CVAP_NHP21 CVAP Estimate for Native Hawaiian or Other Pacific Islander Alone CVAPNHPMOE CVAP Margin of Error for Native Hawaiian or Other Pacific Islander Alone CVAP_WHT21 CVAP Estimate for White Alone CVAPWHTMOE CVAP Margin of Error for White Alone CVAP_AIW21 CVAP Estimate for American Indian or Alaska Native and White CVAPAIWMOE CVAP Margin of Error for American Indian or Alaska Native and White CVAP_ASW21 CVAP Estimate for Asian and White CVAPASWMOE CVAP Margin of Error for Asian and White CVAP_BLW21 CVAP Estimate for Black or African American and White CVAPBLWMOE CVAP Margin of Error for Black or African American and White CVAP_AIB21 CVAP Estimate for American Indian or Alaska Native and Black or African American CVAPAIBMOE CVAP Margin of Error for American Indian or Alaska Native and Black or African American CVAP_2OM21 CVAP Estimate for Remainder of Two or More Race Responses CVAP2OMMOE CVAP Margin of Error for Remainder of Two or More Race Responses CVAP_HSP21 CVAP Estimate for Hispanic or Latino CVAPHSPMOE CVAP Margin of Error for Hispanic or Latino ##Processing CVAP data for Michigan was retrieved from the Census with a Python script. The data is available nationally at the block group level. To extract the data for Michigan the national data was grouped by state and then extracted to a new file for each state. The data was pivoted from narrow to wide data based on GEOIDs so that one row is one block group, and each field represents either an estimate or margin of error for a particular racial/ethnic category. The fields were renamed to fit character length requirements. The shapefile was zipped into a folder with supporting files, ACS documentation, and this README. Processing was primarily completed using Python's pandas library. To improve the usefulness of the data, we have modified three categories to correspond with the Office of Management and Budget (OMB) racial categories. The "Alone" categories for American Indian or Alaska Native (fields with "AIA"), Asian (fields with "ASN"), and Black or African American (fields with "BLK") represent an encompassing racial category that is inclusive of all categories that include that race. For example, CVAP_AIA21 would be the sum of the original "Alone" CVAP_AIA21, CVAP_AIB21, and CVAP_AIW21. For CVAP_BLK21, the field would be the sum of the original CVAP_BLK21, CVAP_AIB21, and CVAP_BLW21. For CVAP_ASN21, the field would be the sum of the original CVAP_ASN21 and CVAP_ASW21 These fields are also noted in the description as being "Alone or In Combination". No other estimate categories were modified. For the estimates that were modified to fit OMB racial/ethnic categories, we also modified the Margins of Error as well. To create the new MOEs for the derived estimates, we summed the squared values of each MOE for the necessary fields, and then took the square root of the summed value. The fields that are represented with these modified MOEs correspond to the modified racial categories described above. They are rounded to the nearest hundredth. For more information on OMB racial categories, please see [here](https://obamawhitehouse.archives.gov/omb/bulletins_b00-02/). All of the racial estimates provided are Non-Hispanic. Breakdowns for Hispanic/Non-Hispanic by race are not provided in the CVAP special tabulation. Null values or empty cells in the CSV file retrieved from the Census are assigned the value -999999. The tabular data for Michigan was joined with geospatial data from Census TIGER files on the unique identifier field (GEOID20) and extracted as a shapefile. Processing for the join used pandas and geopandas libraries. ##Additional Notes For more information on the ACS CVAP documentation please refer to the ACS link above in Sources as well as the ACS technical documentation included in this folder (also available [here](https://www2.census.gov/programs-surveys/decennial/rdo/technical-documentation/special-tabulation/CVAP_2017-2021_ACS_documentation.pdf)). Please note that this dataset is derived from data collected in the five year range of 2017-2021. The Census recommends against using different datasets that contain overlapping years. For more information please see the Census [here](https://www.census.gov/newsroom/blogs/random-samplings/2022/03/period-estimates-american-community-survey.html). For more information on our processing steps please see our GitHub [here](https://github.com/nonpartisan-redistricting-datahub/cvap-processing). Please direct questions related to processing this dataset to info@redistrictingdatahub.org.