AP Source: Dems move to formally back gay marriage

WASHINGTON (AP) — The Democratic Party is moving to include support for gay marriage in the official party platform for the first time, a Democratic official said today, marking a key milestone for advocates of same-sex unions.

The party's platform drafting committee voted to include language backing gay marriage during a weekend meeting in Minneapolis, the official said. Democratic delegates will formally approve the platform during the party convention in Charlotte, N.C. in early September.

President Barack Obama will officially accept his party's nomination at the convention, which marks the start of the fall campaign blitz. Republican rival Mitt Romney will get the GOP nomination a week earlier during his party's convention in Tampa, Fla.

Seeking to ramp up enthusiasm among Democrats, party officials said Sunday that former President Bill Clinton will deliver the nominating speech on Wednesday night of the convention. Obama and Biden are to speak on Thursday, the convention's final night.