Wisconsin governor Scott Walker said Thursday that in the event of a contested convention, the Republican nominee will likely be someone who is "not currently running." "I think if it's an open convention, it's very likely it would be someone who's not currently running," Walker said. "I mean, who knows. The one thing I qualify -- it's like the qualifications you see on those ads you see for car dealerships. I think any of us who comment on this election have to qualify that almost every prediction's been off, so it's hard to predict anything," Walker added. Walker's own run...