Potential partners
Those familiar with Barack Obama's thinking on whom he might select as a running mate are not speaking publicly -- or privately, for that matter. Hillary Rodham Clinton, his rival for the Democratic presidential nomination, has not been ruled in or out.Still, there is no shortage of names floating around political circles. Among them are two erstwhile presidential contenders who since have endorsed Obama: New Mexico Gov. Bill Richardson and former North Carolina Sen. John Edwards, the party's 2004 vice presidential nominee.
