Another biggie: Democratic Victory May Be a Bellwether -- GOP Loses House Seat in Mississippi

From The Washington Post:

A Democrat won the race for a GOP-held congressional seat in northern Mississippi yesterday, leaving the once-dominant House Republicans reeling from their third special-election defeat of the spring.

Democrats said the results prove that they are poised for another round of big gains in the November general elections, and they attacked the Republican strategy of tying Democrats to Sen. Barack Obama, the front-runner for the party's presidential nomination, saying it had failed for a second time in 10 days in the Deep South.