Here is a list of all 55 Republicans.
Sen. Spencer Abraham Republican MI Sen. Wayne Allard Republican CO Sen. John Ashcroft Republican MO Sen. Robert Bennett Republican UT Sen. Christopher Bond Republican MO Sen. Sam Brownback Republican KS Sen. Conrad Burns Republican MT Sen. Ben Nighthorse Campbell Republican CO Sen. John Chafee Republican RI Sen. Dan Coats Republican IN Sen. Thad Cochran Republican MS Sen. Susan Collins Republican ME Sen. Paul Coverdell Republican GA Sen. Larry Craig Republican ID Sen. Alfonse D'Amato Republican NY Sen. Mike DeWine Republican OH Sen. Pete Domenici Republican NM Sen. Michael Enzi Republican WY Sen. Lauch Faircloth Republican NC Sen. Bill Frist Republican TN Sen. Slade Gorton Republican WA Sen. Phil Gramm Republican X Sen. Rod Grams Republican MN Sen. Charles Grassley Republican IA Sen. Judd Gregg Republican NH Sen. Chuck Hagel Republican NE Sen. Orrin Hatch Republican UT Sen. Jesse Helms Republican NC Sen. Kay Bailey Hutchison Republican TX Sen. Tim Hutchinson Republican AR Sen. James Inhofe Republican OK Sen. Jim Jeffords Republican VT Sen. Dirk Kempthorne Republican ID Sen. Jon Kyl Republican AZ Sen. Trent Lott Republican MS Sen. Richard Lugar Republican IN Sen. Connie Mack Republican FL Sen. John McCain Republican AZ Sen. Mitch McConnell Republican KY Sen. Frank Murkowski Republican AK Sen. Don Nickles Republican OK Sen. Pat Roberts Republican KS Sen. William Roth Republican DE Sen. Rick Santorum Republican PA Sen. Jeff Sessions Republican AL Sen. Richard Shelby Republican AL Sen. Robert Smith Republican NH Sen. Gordon Smith Republican OR Sen. Olympia Snowe Republican ME Sen. Arlen Specter Republican PA Sen. Ted Stevens Republican AK Sen. Craig Thomas Republican WY Sen. Fred Thompson Republican TN Sen. Strom Thurmond Republican SC Sen. John Warner Republican VA