Warren Beatty
as Joseph Frady

Paula Prentiss
as Lee Carter

William Daniels
as Austin Tucker

Walter McGinn
as Jack Younger

Hume Cronyn
as Bill Rintels

Kelly Thordsen
as Sheriff L.D. Wicker

Chuck Waters
as Thomas Richard Linder

Earl Hindman
as Deputy Red

William Joyce
as Senator Charles Carroll

Betty Murray
as Mrs. Charles Carroll

Bill McKinney
as Parallax Assassin

Jo Ann Harris
as Chrissy - Frady's Girl

Ted Gehring
as Schecter - Hotel Clerk

Lee Pulford
as Shirley - Brunet Salmontail Bar Girl

Doria Cook-Nelson
as Gale - Blond Salmontail Bar Girl

Jim Davis
as George Hammond

Joan Lemmo
as Organist

Kenneth Mars
as Former FBI Agent Will

William Jordan
as Tucker's Aide

Edward Winter
as Senator Jameson

Stacy Keach, Sr.
as Commission Spokesman #1

Ford Rainey
as Commission Spokesman #2

Alma Beltran
as Joy Holder

Richard Bull
as Parallax Goon

Suzanne Cohane
as Stewardess

Ronda Copland
as Girl

Joe Di Reda
as Ralph Scoletta

Patsy Garrett
as Woman

Penelope Gillette
as Woman

Robert P. Lieb
as Senator Gillingham

William Swan
as Herbert Moon

John S. Ragin
as Buster Himan

Vernon Weddle
as Harry Lutz

Anthony Zerbe
as Prof. Nelson Schwartzkopf (uncredited)