On his "Morning Joe" show this morning, former Congressman Joe Scarborough floated the idea that Gov. Charlie Crist might abandon his run for the Senate and switch to a re-election bid.

Said who Scarborough, who grew up in Pensacola:"I think we may have like a Jay Leno issue here, where Charlie Crist may quit his new gig -- running for Senate -- and may actually go back and run for governor again."

It's not a perfect analogy, of course. Leno actually has a new gig and Crist still has his old one. And a Crist/McCollum/Dockery race for governor, while highly interesting, could be a harder slog for Crist.

Mark Liebovich, who just wrote a good article on the Crist/Marco Rubio matchup in the New York Times magazine, said he hasn't heard anything "tangible" about the rumor: "That's something people are talking about, and I wonder if it's something Charlie Crist himself is not having some regret about."