Sen. Evan Bayh, D-Ind., speaks at the Democratic National Convention in Denver, Wednesday, Aug. 27, 2008. (AP Photo/Stephan Savoia)

Sen. Evan Bayh waves to the media as he arrives at his home in Washington, Friday, Aug. 22, 2008. (AP Photo/Kevin Wolf)

Members of the media record the departure of Sen. Evan Bayh, D-Ind. from his home in Washington, Friday, Aug. 22, 2008. The Indiana senator is thought to be considered as a possible vice president choice for Democratic presidential candidate Sen. Barack Obama, D-Ill. (AP Photo/Kevin Wolf)

Sen. Evan Bayh, D-Ind., leaves his home in Washington, Friday, Aug. 22, 2008. The Indiana senator is thought to be considered as a possible vice president choice for Democratic presidential candidate Sen. Barack Obama, D-Ill. (AP Photo/Kevin Wolf)

Sen. Evan Bayh, D-Ind., leaves his home in Washington, Friday, Aug. 22, 2008. The Indiana senator is thought to be considered as a possible vice president choice for Democratic presidential candidate Sen. Barack Obama, D-Ill. (AP Photo/Kevin Wolf)

Sen. Evan Bayh, D-Ind., is seen leaving his Washington home, Thursday, August 21, 2008. Bayh is on the list of potential vice president candidate for Democratic presidential candidate Sen. Barack Obama, D-Ill. (AP Photo/Lauren Victoria Burke)