New Haven Democrats gave Chris Murphy a rousing show of support for his U.S. Senate campaign—even as his opponent claimed some of them as her own backers.

The event took place Sunday at the East Rock home of U.S. Rep. Rosa DeLauro. It marked the launching of Murphy’s campaign organizing drive in the third U.S. Congressional District. He’s running for the 2012 Democratic nomination of the U.S. Senate seat being vacated by Joe Lieberman.

Some 80 Democrats, many of them elected officials and influential activists, crammed the downstairs of the home DeLauro shares with Democratic strategist Stanley Greenberg. As Dan Malloy learned in the 2010 gubernatorial elections, New Haven Democrats, the state’s largest and best organized bloc of urban votes, are the big prize in statewide elections. Both Murphy and his leading opponent for the Democratic nomination, Susan Bysiewicz, have been calling and calling ward-level Democrats for months seeking their support. (Click here for a report on a Bysiewicz visit to the local party’s town committee last February.)

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