If you're interested in running commentary on what will be the carnage (one hopes) of tonight's Republican presidential debate, I'll be liveblogging the thing over at alien & sedition, your source for slack-jawed wonderment at the spectacle of conservative movement politics. I'll also post a wrap-up here at TDG. Meanwhile, the Times's blog The Caucus has a pretty good viewer's guide to the debate. They're also taking bets on the number of times Ronald Reagan will be invoked. Their guess: 40 -- but 50 if you count Chris Matthews's contributions. Let's see, 90 minute debate, 10 Republicans on stage ... I'll say 45 times. What do you think? The fun begins tonight at 8:00 pm. Coverage is on MSNBC.