The first national poll since the 2008 campaign began to gel shows Clinton leading Obama by 10, Giuliani over a fading John McCain by a 2-1 margin, but Obama the only candidate to lead all comers from the other party. There is a national preference that a Democrat win, but no one has much of a lead in head-to-head matchups. Still, it's hard not to be optimistic if you're a Democrat.

UPDATE [4/12]: More results from that poll (via Yglesias). Edwards also trails Hillary, but does better head-to-head against Republicans. For some reason, Mitt Romney is included in this poll, even though he trails badly within his party, and he's getting walloped by each of the Democrats. Mitt may be the Phil Gramm or Howard Dean of this election, a candidate who raises a lot of money, has intense grass roots support, and is treated seriously by the national media, but proves a disaster before the electorate. Fred Thompson is not matched against Democrats in this poll, and he's the only potential Republican candidate that scares me.