Obama Dominates All 4 Races

Barack Obama swept all four primaries and caucuses tonight and nabbed the winner's share of the 161 Democratic delegates up for grabs, the New York Times reports. He won roughly two-thirds of Washington and Nebraska votes to Hillary Clinton's one-third, and snagged racially divided Louisiana by more than 10 points, MSNBC reports. He also beat Clinton in the Virgin Islands, which have nine delegates.

Overflow crowds flooded polling locations in Nebraska and Washington, forcing caucus sites to adopt ad-hoc procedures and snarling at least one state website. Louisiana exit polls showed that in a state where roughly half of voters were black, Obama won nearly 90% of the black vote. Most remaining voters were white; they favored Clinton by roughly 40 points, the AP reports. (More Obama 2008 stories.)