Former L.A. Mayor crosses party lines, endorses Obama | PolitickerCA: "Mayor Richard Riordan: Getty Images PhotoFormer Los Angeles Mayor Richard Riordan, a Republican, is backing Democratic presidential nominee Barack Obama and attended a high-profile Beverly Hills fundraiser for the candidate last night. He explained to KCAL-TV why he had crossed party lines. 'I think he's a much more open person,' Riordan said as he arrived at the event, which featured a performance by Barbra Streisand. ...

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