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