Election Data

Registration statistics (street index)

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

Turnout history

Download weighted votes from the February 2, 2010 Primary Election and view comparative election turnout in even-numbered years over the last 20 years.

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:

• 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.