2020 Michigan precinct and election results shapefile. ## RDH Date retrieval 01/12/2022 ## Sources Election results from the Michigan Secretary of State (https://miboecfr.nictusa.com/cgi-bin/cfr/precinct_srch.cgi) Precinct shapefile from the Michigan GIS Open Data site (https://gis-michigan.opendata.arcgis.com/datasets/49eb37d0a4294924bf8ef5ffe0eac47e_6/) ## Fields metadata Vote Column Label Format ------------------------ Columns reporting votes follow a standard label pattern. One example is: G16PREDCli The first character is G for a general election, P for a primary, C for a caucus, R for a runoff, S for a special. Characters 2 and 3 are the year of the election. Characters 4-6 represent the office type (see list below). Character 7 represents the party of the candidate. Characters 8-10 are the first three letters of the candidate's last name. Office Codes AGR - Agriculture Commissioner ATG - Attorney General AUD - Auditor COC - Corporation Commissioner COU - City Council Member DEL - Delegate to the U.S. House GOV - Governor H## - U.S. House, where ## is the district number. AL: at large. INS - Insurance Commissioner LAB - Labor Commissioner LAN - Commissioner of Public Lands LTG - Lieutenant Governor PRE - President PSC - Public Service Commissioner RRC - Railroad Commissioner SAC - State Appeals Court (in AL: Civil Appeals) SCC - State Court of Criminal Appeals SOS - Secretary of State SSC - State Supreme Court SPI - Superintendent of Public Instruction TRE - Treasurer USS - U.S. Senate Party Codes D and R will always represent Democrat and Republican, respectively. See the state-specific notes for the remaining codes used in a particular file; note that third-party candidates may appear on the ballot under different party labels in different states. ## Fields G20PRERTRU - Donald J. Trump (Republican Party) G20PREDBID - Joseph R. Biden (Democratic Party) G20PRELJOR - Jo Jorgensen (Libertarian Party) G20PREGHAW - Howie Hawkins (Green Party) G20PRENDEL - Rocky De La Fuente (Natural Law Party) G20PRETBLA - Don Blankenship (US Taxpayers Party) G20USSRJAM - John James (Republican Party) G20USSDPET - Gary Peters (Democratic Party) G20USSGSQU - Marcia Squier (Green Party) G20USSNDER - Doug Dern (Natural Law Party) G20USSTWIL - Valerie L. Willis (US Taxpayers Party) ## Processing Steps Some counties report "Statistical Adjustments" with their precinct results, which can either be positive or negative. Many of these are related to cities that span county lines, as they often match precinct results of these county-spanning cities. In some cases these adjustments cancel each other out across the two counties that share the city, but some (notably Clinton County's East Lansing and Eaton County's Lansing adjustments) are not reciprocated, which introduces error to statewide totals. Other than these, there appears to be a handful of tiny adjustments that were made to make the precinct totals match official countywide totals. None of these adjustments of any type were distributed to precincts, which may result in candidate totals being slightly off official totals. Write-in vote totals have been excluded, since in most cases, a large share of their votes are accounted for via statistical adjustments. In several cases, cities that overlapped county lines reported results in each county, but the shapefile had a single precinct. These were split at the county line in the shapefile and the two sets of results assigned accordingly. Claire city - Isabella/Clare Brown city - Lapeer/Sanilac Fenton city - Oakland/Genesee Richmond city - St. Clair/Macomb Berrien: the results for Sodus and St. Joseph townships appear to have been flipped, these were corrected Ottawa: via contact with the Park Township clerk's office, precinct 9 in the state shapefile has been renumbered to precinct 4 Wayne: Detroit reports absentee votes via Absent Voter Counting Boards. The linkage file of boards to precincts is from OpenElections (https://github.com/openelections/openelections-sources-mi/tree/master/2020), and votes were distributed to precincts proportionally by election day vote.