datamade/chicago-municipal-elections

Chicago Municipal Elections

Chicago Municipal Elections: 1983, 2007-2023

This is a repository of elections results and precinct geographies for Chicago municipal elections. You can get all the files here by downloading this zip file.

Election results

The elections results are in the /data directory. They come in two formats: spreadsheets and geojson files.

The spreadsheets have a .csv file extension. You should be able to open these files in Excel or other spreadsheet program. Each rows contains the ballots and votes cast in an election in an election precinct.

The geojson files have a .geojson file extension. You can open these files in GIS software like QGIS. It has all the ballot and vote data for ever precinct but also the geographic data about the precinct. These files are good for making maps.

Attributions

The 1983 data is from the Chicago Elections Project and is licensed CC BY 3.0 US.

chicago-municipal-elections's Issues

Exit polling

• https://www.nytimes.com/interactive/2015/04/07/us/how-chicagoans-voted-and-why.html

Relevant papers

http://www.sscnet.ucla.edu/polisci/faculty/lewis/pdf/lewisSUEIproof.pdf

Pull data from http://cdp.northwestern.edu

curl 'http://cdp.northwestern.edu/database/graphql' -H 'Host: cdp.northwestern.edu' -H 'User-Agent: Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:58.0) Gecko/20100101 Firefox/58.0' -H 'Accept: */*' -H 'Accept-Language: en-US,en;q=0.5' --compressed -H 'Referer: http://cdp.northwestern.edu/database/race/2015-02-15+10017/maps/precinct' -H 'content-type: application/json' -H 'origin: http://cdp.northwestern.edu' -H 'Connection: keep-alive' -H 'Pragma: no-cache' -H 'Cache-Control: no-cache' --data '{"query":"query RaceMap($raceID: ID!, $year: Int!, $level: LEVEL!) {\n  raceMapColors(id: $raceID, level: $level)\n  geojson(year: $year, level: $level)\n}\n","variables":{"raceID":"2015-02-15+10017","year":2015,"level":"PRECINCT"},"operationName":"RaceMap"}'

It's a graphql endpoint. This looks relevant: http://requester.org/#graphql

Use FOIAed PDFs to audit shapefiles

Add other historical elections from Chicago Election project

build off of @pjsier's nice work for the 1983 election

https://data.lib.vt.edu/articles/dataset/Chicago_Elections_Project/14099084

The 2003 precinct geojson does not line up with the CBOE election results

In particular, the CBOE results includes data for Ward 1, Precinct 40 which does not appear in 2003_precincts.geojson or any other file.