Let's be clear: January 3d was the single most important day in Barack Obama's drive to the White House. It was his huge win in Iowa which propelled his candidacy forward.
But today was a close second. Ted Kennedy's endorsement of Obama was powerful, moving, passionate, and compelling. Video here; read the speech here.
Some say endorsements don't matter. (It's been almost hilarious hearing the Clintons' camp spin and spin trying to downgrade this). Marc Ambinder, as well as anyone, explains why the Kennedy endorsement is so critical, in a blog post here.