Haha, I still think Crist was the best VP choice for McCain. And only 20% of that was because of the Christ vs. Hussein insinuation in the wordplay.
Sink seems to be hoping that he'll go for the Senate, but only seems to be interested in running for an open seat, who else could make him gone? Iorio is/was also wishing that Crist would depart and wanted to run for an open seat, but now that all three Democratic candidates in the US senate primary are from the exact same county, she seems to be rethinking.
No one is interested in primarying him. Hell, Marco is running an "I'm running for Senate or Governor, whatever one Crist isn't running in" campaign. Even if Crist's popularity takes a dip, it seems that he'll get only token opposition. At least from my generic following of google news searches and regularly checking:
http://blogs.tampabay.com/buzz/