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