The most significant result of the night is in Mississippi's 1st district, not Pennsylvania (which Jonathan Singer live-blogged at MyDD). In MS-01, Democrats forced a run-off. Democrat Travis Childers took 49% of the vote against Republican Greg Davis, and if you combine the other Democrats in with Childers, Democrats took more than 50% of the vote. And this is an R+10 district.
Here are the results.
Precincts Reporting - 99%
462 of 462
Greg Davis (R) - 46%
Travis Childers (D) - 49%
Steve Holland (D) - 1%
Glenn McCullough (R) - 1%
The public hates Republicans, and larger macro factors are at play.
Don't get distracted by noise. It's fun to bite your nails and fret about how Democrats are tearing themselves apart, which of course I heard plenty of on the various cable shows. But whatever. Obama's probably going to take the nomination as Clinton doesn't have enough to win, and her annoyed supporters will move to Obama after she endorses him.
And then macro factors, the economy and Iraq, and McCain's general insanity and old crazy man persona is going to hurt him badly. No one likes Republicans, even in R+10 districts.