Numbers released by state board of elections show that the suburban portions of the 2nd congressional district hold 75 percent of registered voters in the 2nd congressional district.
There's about 120,000 voters in the City of Chicago, making up less than 27 percent of the registered voters.
Of course, this special election is all about who actually shows up to the polls.
Here's the data:
Voter Registration Data
Total: Approximately 448,000 registered voters in the 2nd Congressional District
About 120,000 (26.8%) in 170 precincts in Chicago
About 231,000 (51.6%) in 263 precincts in South Suburban Cook County
About 32,000 (7.1%) in 27 precincts in South Suburban Will County
About 65,000 (14.5%) in 85 precincts in South Suburban Kankakee County
As for early voting, here's the numbers in the City, according to the Chicago Board of Elections
Early Voting in Chicago
Chicago saw 2,768 use early voting as of close Saturday (2.3% of those registered).
In the 2009 Special Primary, Chicago had 1.3% of those registered use Early Voting.
Absentee Voting in Chicago
Approximately 690 have either used or applied to use some other form of absentee voting/nursing home voting/grace period voting. There are 28 applications from military/overseas.