then there's the enthusiasm question. in wisconsin republican voters overwhelmingly thought romney would be the nominee and that includes two-thirds of santorum voters. when it comes to those who will vote gop regardless of the nominee, romney voters led by almost 20 points, nonromney votes were less interested. has romney begun to pull it altogether? and shake in a race? challenges remain. party unity's not fully there. women and independents have to reconcile stances that santorum dragged romney to right on and of course when will santorum and newt gingrich step aside? chris, that tipping point could be pennsylvania or texas, or even tampa. >> love the etch a sketch. thank you so much. with all of the stars now aligning for mitt romney, there is some talk, more talk, about who he might pick as a running mate. will he be bold or take the safe route? well, here's what people who use the online prediction site