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