Democratic presidential candidates (L-R) former US Senator Mike Gravel (D-AK), US Senator Chris Dodd (D-CT), former US Senator John Edwards (D-NC), US Senator Hillary Rodham Clinton (D-NY), US Senator Barack Obama (D-IL), New Mexico Governor Bill Richardson, US Senator Joe Biden (D-DE) and US Congressman Dennis Kucinich (D-OH) participate in a debate at Saint Anselm College in Manchester, New Hampshire June 3, 2007. [Reuters]

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