Sen. Barbara Boxer, D-Calif., questions a witness during a Senate Commerce Committee hearing on Capitol Hill in this Feb. 28, 2006 file photo.
Sen. Boxer could assume the chairmanship of the Senate Environment and Public Works Committee should Democrats take control of the Senate in the Nov. 7, 2006 election. (AP Photo/J. Scott Applewhite, File)
Sen. John Kerry, D-Mass/, speaks with reporters during a news conference in Jerusalem in this Jan. 17, 2006 file photo.
Kerry would likely chair the Senate Small Business Committee should Democrats assume control of the Senate in the Nov. 7, 2006 election. (AP Photo/Baz Ratner, File)
Sen. Robert C. Byrd, D-WV, talks with reporters during a news conference in Charleston, W.Va., in this Sept. 9, 2005 file photo.
Byrd could become chairman of the Senate Appropriations Committee should Democrats regain control of the Senate in the Nov. 7, 2006 election. (AP Photo/Bob Bird, File)
Senate Minority Leader Harry Reid, D-Nev., second from left, joined by fellow Democratic senators, talks with reporters during a news conference on Capitol Hill in Washington in this Sept. 20, 2006 file photo.
Reid may assume the role of Senate majority leader should the Democrats regain control of the Senate in the Nov. 7, 2006 election. Left-right: Sen. Charles Schumer, D-NY, Reid, Sen. Richard Durbin, D-Ill., , and Sen. Byron Dorgan, D-N.D. (AP Photo/Lawrence Jackson, file)
Sen. Patrick Leahy, D-Vt. , talks with reporters during a news conference in Burlington, Vt. in this July 1, 2005 file photo.
Leahy could chair the Senate Judiciary committee should the Democrats take control of the Senate in the Nov. 7, 2006 election. (AP Photo/Toby Talbot, File)
Sen. Joseph Biden, D-Del., makes his opening statement during the confirmation hearing for Supreme Court nominee Samuel Alito on Capitol Hill, in this Jan. 9, 2006 file photo.
Biden could become chairman of the Senate Foreign Relations Committee should Democrats regain control of the Senate in the Nov. 7, 2006 elerction. (AP Photo/Gerald Herbert, File)
Sen. Max Baucus, D-Mont., right, and Sen. Charles Schumer, D-N.Y. speak with reporters during a Capitol Hill news conference in Washington in this May 11, 2006 file photo.
Baucus could become chairman of the Senate Finance Committee should Democrats assume control of the Senate in the Nov. 7, 2006 election. (AP Photo/Lauren Victoria Burke, File)
Sen. Kent Conrad, D-N.D., talks with reporters during a news conference on Capitol HIll in washington in this Jan. 25, 2005 file photo.
Conrad could become chairman of the Senate Budget Committee should the Democrats regain control of the Senate in the Nov. 7, 2006 election. (AP Photo/Dennis Cook, File)
Sen. Carl Levin, D-Mich., listens to testimony during a Senate Armed Services Committee hearing on Capitol Hill in Washington in this Sept. 19, 2006 file photo.
Levin could become chairman of the Senate Armed Services Committee should the Democrats assume control of the Senate in the Nov. 7, 2006 election. (AP Photo/Charles Dharapak, File)
Senate Daniel Inouye, D-Hawaii, talks with reporters during a news conference with Sen. Bill Nelson, D-Florida, left, and Sen. Gordon Smith, R-Oregon, on Capitol Hill in Washington in this July 14, 2005 file photo.
Inouye could become chairman of the Senate Commerce committee should Democrats regain control of the Senate in the nov. 7, 2006 election. (AP Photo/Yuri Gripas, File)
Sen. Edward Kennedy, D-Mass., and Sen. Christopher Dodd, D-Conn., left, talk with reporters during a news conference on Capitol Hill in this July 1, 2005 file photo.
Should the Democrats assume control of the Senate in the Nov. 7, 2006 election, Sen. Kennedy could become chairman of the Senate Health, Education and Labor Committee while Sen. Dodd could assume chairmanship of the Senate Banking and Housing Committee. AP Photo/Dennis Cook, File)