Where SAGE's USA precinct data comes from

SAGE's United States precinct returns for 1992–2024 were collected from each state's own election office. This page lists what was used for every state-year: the document that the votes came from, the source of that document, and the boundary layer that each unit's shape was obtained from. Click each year to open it. Percent indicates how many of the electoral units are geocoded.

Note that in some state-years the current data are at the county level; these will be updated to the precinct level when the data are found and processed. These state-years are marked co.

Every result document below carries one of these four sources.

official, from the office's own live host
Pulled from the election office's own website.
official, recovered from the Internet Archive
The office published it and no longer serves it; recovered from a Wayback capture of the office's own host.
the office's own file, byte-identical copy
Held by OpenElections, but byte-identical (SHA-256) to the office published version.
transcribed by a third party
Some person(s) re-typed the figures from a printed or scanned original. These are most often from the Census Bureau. The only class where a number could differ from the office's own.

The following is an exhaustive list of non-government dependencies.

Ansolabehere–Rodden precinct deposits and the Harvard Election Data Archive [link]
AR 2008, CO 2004, IA 2008, KS 2000, KY 2008, NE 2008, NE 2012, OK 2004, OK 2008, OR 2008, UT 2008
Federal Elections Project, Lublin and Voss (NSF #99-85999), recovered from the Internet Archive [link]
OH 2000
OpenElections, transcribed data [link]
AR 2012, IN 2012, IN 2016, IN 2020, IN 2024, MO 2024, NE 2016, NE 2020, NY 2012, OR 2000, OR 2004, OR 2008, WV 2000, WV 2004

New York 2012 is the one case where a compilation is preferred over an office's own document: no New York authority published a statewide sub-county file, and twenty-one counties rest on a re-keyed one. Twenty-eight of the thirty-nine counties also built from board documents reproduce it district for district.