The newest poll has Romney well ahead of Santorum.
A new Illinois poll shows that most voters in the state won't vote for a Mormon, while evangelicals are favoring Santorum.
Romney is polling well with moderate Republican voters in the state.
Illinois feels like an early gauge of what could be the race to the nomination in the months ahead.
Crime and corruption run rampant in Illinois. With that in mind here's what GOP candidates should tell voters.
Whatever happens in the Republican primary, the state will still swing heavily Democrat in the general election.
With 20 delegates at stake, Sunday's Puerto Rico primary could make a big difference in the race for the GOP nomination.
Even if Santorum wins the popular vote he still cannot get all the delegates he'd like.