There is speculation all over the place about a Schwarzenegger endorsement. "Sources" tell CNN that he’ll endorse McCain tomorrow.

McCain’s a gimmee for Arnie — another maverick Republican who supports action on global warming. And since it looks increasingly likely that McCain’s got it sewn up, that’s probably that.

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Matters would have been much more interesting if Romney got the nomination. I strongly suspect, and have heard from a few sources of my own, that Arnie would endorse a Dem over Romney. Would he endorse Hillary? I doubt it — I bet he’s just sit the race out.

But Obama? I’d bet money that Schwarzenegger would endorse Obama over Romney.

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I guess now we’ll never know.