Former Sens. Sam Nunn and David Boren have endorsed Barack Obama. Nunn and Boren were both fairly conservative Democrats, though Nunn tacked to the left somewhat when he began to have national ambitions in the early 1990s. Boren’s son is a Democratic congressman and an uncommitted superdelegate. What this means is unclear, other than it might end the speculation that Nunn will run for president himself as a third-party candidate.
