Is Crist Toast?

A new poll shows a 43 percent swing against him in ten months. Why? Among other things, he believes Obama is a legitimate president. Moulitsas suggests:

If I'm Charlie Crist, I realize that I'm toast in the Republican primary. I note that a three-way race is a coin flip at best. But as a Democrat... switching parties and making an earnest transition on the issues would be the cleanest path to a Senate seat. It's clear that he's no longer welcome in his own party. And he has a choice to make -- remain as a hated interloper in his existing party, or try to find a more hospitable home elsewhere.

It's hard to see how today's religious and angry Republican base can tolerate people like Snowe or Colins or Specter or Crist or Huntsman for much longer.