By NOLAN MCCARTY & KEITH POOLE & HOWARD ROSENTHAL | 7/24/08 8:18 AM EST look forward to November, both candidates seem primed to claim that he is the only candidate capable of being a "bipartisan" leader. Obama is fond of saying that "we may call ourselves Democrats and Republicans, but we are Americans first." McCain touts a "long record of bipartisan problem solving" and claims to have always "put our country before any party." Should the next president proceed to govern in such a way to heal (or least overcome) America's partisan divisions, it would be no mean feat. Our research on congressional roll call voting documents that Congress is at a 100-year low in bipartisanship – a finding supported by the work of many other scholars. In fact, the supposedly "purple" election of 2006 with its freshman class full of red state...
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