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