Well, it's possible that the new infusion of ad money against Donald Trump kept his margins in Kentucky and Louisiana down a bit. But we're also seeing something that we've never seen in 100 years, which is we are seeing the crackup of a major American political party.
Mara LiassonThe enthusiasm for [Donald] Trump had gone up. The net result was it made people more supportive of him.
Mara LiassonThe winner's margin of victory also matters. If it's a squeaker, that will make the lessons learned for both parties much murkier.
Mara LiassonRomney still enjoys the Republicans' traditional advantage among voters who are veterans, but the Obama campaign is confident it can chip away at that.
Mara Liasson