Chicago - The Republican race for president looks like a two-man contest in Illinois Thursday night. Mitt Romney is ahead of Rick Santorum among Illinois Republicans, even after Santorum’s big victories in Alabama and Mississippi on Tuesday. But Santorum is within striking distance for next Tuesday's primary. An exclusive FOX Chicago News poll found a six point lead for Romney among those likely to vote in the March 20 presidential primary. Romney had the support of 37 percent on Wednesday. Rick Santorum earned 31 percent of the vote.