An excerpt from The Swamp:
After Hillary Clinton's full-throated endorsement of Barack Obama Saturday afternoon, watch for a "unity bounce" in the Democratic nominee's campaign that some pollsters think could rival the post-convention bounce that campaigns traditionally experienced.
Democrats are now emerging from a hard-fought, protracted primary that exposed fault lines along such visceral elements of identity politics as race, gender and class. The ability of the party to overcome the ill feelings of the primary season and rally around its nominee will go a long way to determining its success during an election in which most signs point to a Democratic year.
So the strength and durability of a bounce for the Obama campaign in the coming weeks is likely to be an early indicator of the party's chances of success in the general election.