CHICAGO (AP) -- Democratic Gov. Pat Quinn and Republican Bruce Rauner are setting up a big-money battle to become Illinois' next governor.
The candidates released campaign finance reports Tuesday for the three-month period that ended June 30.
They show Quinn raised about $3.7 million in that period and has about $12 million in his campaign fund.
Rauner raised more than double Quinn's total in the second quarter but spent much more, leaving him with about $3.5 million. But the multimillionaire businessman has the ability to raise millions more. He's already given more than $6 million to his own campaign.
University of Illinois at Springfield political studies professor Chris Mooney says the highly-competitive contest "has every single earmark of a massive-spending race."
Mooney says voters should prepare for seemingly constant TV campaign ads.