| Pre-boomer | Brock Adams,
Daniel Akaka,
Max Baucus,
Lloyd Bentsen,
Joe Biden,
Jeff Bingaman,
David Boren,
Bill Bradley,
John Breaux,
Hank Brown,
Richard Bryan,
Dale Bumpers,
Jocelyn Burdick,
Conrad Burns,
Robert Byrd,
John Chafee,
Dan Coats,
Thad Cochran,
William Cohen,
Larry Craig,
Alan Cranston,
Jack Danforth,
Dennis DeConcini,
Alan Dixon,
Chris Dodd,
Bob Dole,
Pete Domenici,
David Durenberger,
Alfonse D'amato,
Jim Exon,
Wendell Ford,
Wyche Fowler,
Jake Garn,
John Glenn,
Slade Gorton,
Bob Graham,
Chuck Grassley,
Tom Harkin,
Orrin Hatch,
Mark Hatfield,
Howell Heflin,
Fritz Hollings,
Daniel Inouye,
James Jeffords,
Bennett Johnston,
Nancy Kassebaum,
Edward Kennedy,
Bob Kerrey,
John Kerry,
Herb Kohl,
Frank Lautenberg,
Patrick Leahy,
Carl Levin,
Joseph Lieberman,
Richard Lugar,
Howard Metzenbaum,
George Mitchell,
Daniel Moynihan,
Sam Nunn,
Robert Packwood,
Claiborne Pell,
Larry Pressler,
David Pryor,
Harry Reid,
Donald Riegle,
Chuck Robb,
William Roth,
Warren Rudman,
Terry Sanford,
Paul Sarbanes,
James Sasser,
John Seymour,
Richard Shelby,
Paul Simon,
Alan Simpson,
Ted Stevens,
Strom Thurmond,
John Warner,
Paul Wellstone,
Tim Wirth,
Harris Wofford | Kit Bond,
Phil Gramm,
Jesse Helms,
Trent Lott,
Connie Mack,
John McCain,
Mitch McConnell,
Frank Murkowski,
Robert Smith,
Arlen Specter,
Steven Symms,
Malcolm Wallop | Robert Kasten,
Barbara Mikulski,
Jay Rockefeller |