Ummmm, Evan Bayh, the popular two-term governor of Indiana and current Senator, is from an extremely conservative state. Indiana went overwhelmingly for Bush, has a Republican governor, Senate and House, and has 7 of its 9 members of Congress from the GOP. In fact. of the three incumbents defeated this year nationally (if you exclude the Texas gerrymander victories), one, Baron Hill, was a Democrat from Indiana.
Despite all of this, Bayh got 62% of the vote two weeks ago for another term. That means an incredible number of Hoosiers who voted for Bush also voted for Bayh.
He is a Henry Jackson type Democrat in a very Red state.
Evan Bayh is not a politician of consequence. He most definitely isn't going to win a Democrat presidential nomination, and he's not proof of a moderate takeover in the Democrat party.