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