The central rationale for Evan Bayh's candidacy is simple: he's a Democrat who can appeal to Republicans. Exhibits A and B, which Bayh trots out during his stump speech, are these two maps. The red one shows George W. Bush's results in Indiana in 2004, when he won the state by 21 percent. The blue one? Bayh's results that same day. His margin of victory: 24 percent.