Let's talk about Trump.

He's second only to Mitt in a recent poll. But there's no way he can be the nominee. What's going on? Name recognition? An early-in-the-game spirit of fun? I don't know, but he's in it now enough that he'll be listened to and included in the debates, and he can say whatever he wants until the moment arrives when he throws his support over to some realistic candidate. Meanwhile, we've got him stirring up the old birther issue, going where candidates who must coddle their credibility dare not go.