Election Data

Registration statistics (street index)

View or download voter registration statistics and download the street index of suburban Cook County.

Precinct canvasses

Download precinct-level election results. Files are available as .zip Excel spreadsheets.

Turnout history

View comparative election turnout over the last 20 years.

Early Voting turnout history

During Early Voting, real-time turnout is available by site. An archive of Early Voting turnout data is available here.

Post-Election Reports

The Clerk's office produces post-election reports after elections in even-numbered years. In addition to complete Cook County results, these reports include analysis of close races, historical comparisons and turnout maps. Download reports:

• November 6, 2012
• March 20, 2012
• November 2, 2010
• February 2, 2010
• November 4, 2008
• February 5, 2008

Registration file requests

See information about ordering voter registration files.

Download data

Downloadable data for qualifying users, including political organizations and those with FOIA requests.