Fieldmarshaldj nailed it. BTW, I've been an election judge in every election, and this week's April 2013 local election for township and village offices (suburban Cook Co. only, we don't vote for any city of Chicago offices) had a turnout that reflected the demographics of my local neighborhood -- about 70-80% white and 20-30% black, hispanic, and asian. Of course, when the SAME pct. voted in 2012 (with Obama on top of the ticket & the RATs needing to take back all the Congressional districts and get a veto proof majority in the both houses of the state legislature), and in 2010 (with Quinn on the top of the ticket, and combiner Kirk running for U.S. Senate), the turnout in my pct. was roughly 50% white and 50% black, with dozens of "new" voters showing up that I had never seen before in my life, listed in the voter rolls as "active" suburban voters and supposed local residents. Of course, we don't have to ask for ID if they're "active" voters. If those "new" voters were legit, I have a bridge to sell you.
The integrity of the ballot is a joke in Illinois, especially Crook County. Corpses and illegal aliens choose our Governors, Senators, and state legislators.
Sounds like they bused people in from the city.