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