President Pro Tempore: Ted Stevens

Majority Leader: Bill Frist

Majority Whip: Mitch McConnell

Republican Policy Committee Chair: Jon Kyl

Republican Conference Chair: Rick Santorum

Minority Leader: Harry Reid

Minority Whip: Richard Durbin

Democratic Policy Committee Chair: Byron Dorgan

Majority Leader: Roy Blunt/David Dreier

Majority Whip: Roy Blunt

Republican Conference Chair: Deborah Pryce

Republican Policy Chair: John Shadegg

Minority Leader: Nancy Pelosi

Minority Whip: Steny Hoyer

Democratic Caucus Chair: Robert Menendez

Assistant Minority Leader: John Spratt