Howard Dean hosting DC fundraiser for Michelle Nunn

The liberal former candidate's backing of the centrist Nunn, who's running for retiring Sen. Saxby Chambliss's (R-Ga.) seat, is the latest sign top Democrats are lining up to support her candidacy. Dean is a lobbyist at the law and lobbying firm, as is Gordon Giffin, Nunn's top advisor and a longtime Georgia Democratic strategist.

Democrats are hopeful that Nunn can give the GOP a tough race in the red-leaning state.

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