He doesn't sound all in, but a recent blog post by Doyle Brunson, poker's most legendary maverick , on Doyle's Room makes him seem to be leaning towards McCain:
"It's hard to believe, but McCain has taken the lead in the Presidential race. They rolled the dice when they chose Governor Palin to run for Vice-President and they threw a seven, because she really turned things around for the Republicans."
Brunson then continued: "It's hard not to be in McCain's camp after listening to his life story. He really is an American hero. I'm not sure either Presidential candidate is the right person to lead our country over the next few years." (via 911gambling.com)
Brunson had initially said he'd be voting Democrat for the first time in his life this election.
In a survey of 1639 American Poker players, Yahoo! Sports UK reports that 64% support Obama over McCain, who both are apparently proficient poker players in their own right. Sarah Palin has also been known to play a few hands. However, the trump card (not to mix bad gambling puns, or nothing) goes to Joe Biden, whose son, according to 911Gambling, was a lobbyist for online gambling site PartyGaming.
If the most recently proposed $700 billion bailout goes through, if and when Obama gets elected it sounds like he might be playing short stacked, concerning his spending programs.