How will tonight's primary results affect the candidates campaigns moving forward? Karl Rove and Charles Krauthammer weigh in tonight on The O'Reilly Factor at 8p ET.

Just last week on The O’Reilly Factor, Karl Rove weighed in on the Wisconsin primary. He agreed with Bill O’Reilly that if Mitt Romney wins, then he’s likely to take the nomination. However he said that’s a big if because Rick Santorum tends to outperform his poll numbers.

With Romney’s recent endorsements by Paul Ryan, Marco Rubio and George H. W. Bush, Rove speculated, “I do think it does come down to Wisconsin. If Wisconsin is in the Romney camp, then I think you’re right, the inflection of the campaign is going to be set irretrievably in one direction.”

Watch the rest of Rove's analysis. Plus, tell us who you think will win the Wisconsin primary by voting in our poll below.