| Pre-boomer | Bob Bennett,
Kit Bond,
Robert Byrd,
Ben Campbell,
John Chafee,
Dan Coats,
Thad Cochran,
Paul Coverdell,
Larry Craig,
Jack Danforth,
Chris Dodd,
Bob Dole,
Pete Domenici,
Byron Dorgan,
Alfonse D'amato,
Lauch Faircloth,
Phil Gramm,
Orrin Hatch,
Jesse Helms,
Fritz Hollings,
Daniel Inouye,
James Jeffords,
Bennett Johnston,
Trent Lott,
John McCain,
Mitch McConnell,
Frank Murkowski,
Sam Nunn,
Claiborne Pell,
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,
John Breaux,
Hank Brown,
Richard Bryan,
Dale Bumpers,
Conrad Burns,
William Cohen,
Dennis DeConcini,
Jim Exon,
Dianne Feinstein,
Wendell Ford,
John Glenn,
Slade Gorton,
Bob Graham,
Chuck Grassley,
Tom Harkin,
Mark Hatfield,
Howell Heflin,
Kay Bailey Hutchison,
Edward Kennedy,
Bob Kerrey,
John Kerry,
Herb Kohl,
Frank Lautenberg,
Patrick Leahy,
Carl Levin,
Joseph Lieberman,
Richard Lugar,
Connie Mack,
Harlan Mathews,
Howard Metzenbaum,
Barbara Mikulski,
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 | David Durenberger,
Nancy Kassebaum,
Robert Packwood,
David Pryor,
Richard Shelby |