MSNBC after-party: Starts late, runs late thanks to party-hoppers

How can a party be more crowded at 2 a.m. than at 1 a.m.? A Washington party, we mean? For MSNBC's popular after-party, the challenge has always been that its otherwise dazzling setting at the Italian embassy, spotlit green and purple Saturday night, is a full mile from the White House Correspondents' Association dinner at the Washington Hilton on a night of Town Car gridlock, scarce cabs and painful dress-up shoes.