Sen. Evan Bayh (D., Ind.) is already the Democrat who voted against Obama the most in 2009 (23 percent of the time; compare to Ben Nelson’s 10 percent and Lieberman’s 4 percent). And now he is making an early effort to run to the middle in a Post-Brown world. But it may not be enough to fend off a general election challenge from GOP House Conference Chair Mike Pence (R., Ind.).