The good news for Democrats: In a recent Diageo/Hotline poll, a generic Democratic presidential candidate beats a generic Republican presidential candidate in 2008 by 18 percentage points.
The bad news for Democrats: Generic candidates don't run for office.
In the most recent Time poll, respondents say they'd vote for Hillary Clinton or Barack Obama over Mitt Romney, but that they'd pick John McCain or Rudy Giuliani over either Clinton or Obama. (The poll didn't include John Edwards in any head-to-head general election matchups.)
As an unidentified Democratic consultant tells the Hotline. "Our 'top tier' candidates may be the only Democrats in existence who can't win in 08."
Tim Grieve is a senior writer and the author of Salon's War Room blog.