CNN has projected Mitt Romney as the winner of the Illinois primary
Earlier, Fox News also called the race for Romney.
With 7 percent of precincts reporting, Romney has 55 percent, Rick Santorum 28 percent, Ron Paul 10 percent and Newt Gingrich 7 percent.
The exit polls currently suggest a finishing order with Romney in first, Santorum second, Gingrich a very distant third and Paul close behind in fourth.