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