Republican presidential candidates crisscross the state looking for votes. Our Elizabeth Brackett followed Rick Santorum to downstate Dixon, Illinois. Elizabeth and Carol Marin take a look at Tuesday's primary.
Rick Santorum
On Wednesday night, the remaining four GOP presidential hopefuls had their 20th debate. Did Rick Santorum solidify his surge or did Mitt Romney seize much-needed momentum? Northwestern's Jason DeSanto is here to help us keep score.
Republican candidate Rick Santorum has made a clean sweep in the last three primaries. With Super Tuesday now less than a month away -- what's next for the campaign? Carol Marin and her panel tell us.