U.S. Sen. Mary Landrieu, D-La. delivers her victory speech along with her husband Frank Snellings at her election night headquarters in New Orleans, Tuesday, Nov. 4, 2008. (AP Photo/Bill Haber)

In this July 8, 2008, file photo Republican Louisiana State Treasurer John Kennedy, joined by his wife Becky and son Preston, settle aboard their campaign bus after Kennedy he announced in Kenner, La., that he will challenge Louisiana Democratic, Sen. Mary Landrieu, in the fall elections. Strategists in both parties have long expected that the race for the Democrat U.S. Senate seat, held by Landrieu, who has never drawn more than 52 percent of the vote, will be very close. (AP Photo/Bill Haber, File)

Sen. Mary Landrieu, D-La., right, points to a chart during a news conference on Capitol Hill in Washington, Friday, Aug. 1, 2008, to discuss energy plans, with, from left, Sen. Kent Conrad, D-N.D., Sen. Blanche Lincoln, D-Ark., and Sen. John Thune, R-S.D. All are members of the bipartisan coalition of senators know as the "Gang of Ten". (AP Photo/Susan Walsh)

In this Jan. 30, 2006 file photo, Sen. Mary Landrieu, D-La., second from left, stops to visit with Sen. Mark Pryor, D- Ark., left, as he has lunch with a group called Women of the Storm, Louellen Berger and Frances Fayard, of New Orleans, in the Senate dining room on Capitol Hill in Washington. The famed bean soup served in Senate restaurants is made up of dried navy beans, smoked ham hocks, onions and a million-dollar tab for the taxpayer. That menu for financial distress could be about to change as the Senate, following the lead taken by the House more than 20 years ago, moves to privatize the restaurants, coffee shops and cafeterias located in the Capitol and Senate office buildings. (AP Photo/Susan Walsh, File)