Robert Leffingwell

Henry Fonda

Sen. Seabright Cooley

Charles Laughton

Sen. Brigham Anderson

Don Murray

Senate Majority Leader

Walter Pidgeon

Sen. Lafe Smith

Peter Lawford

Dolly Harrison

Gene Tierney

Senator Fred van Ackerman

George Grizzard

The President

Franchot Tone

The Vice President

Lew Ayres

Herbert Gelman

Burgess Meredith

Sen. Stanley Danta

Paul Ford

Johnny Leffingwell

Eddie Hodges

Sen. Bessie Adams

Betty White

Ellen Anderson

Inga Swenson

Hardiman Fletcher

Paul McGrath

Self (voice)

Frank Sinatra

Senate Minority Leader

Will Geer

Senator Orrin Knox

Edward Andrews

Senator Tom August

Malcolm Atterbury

Senator Powell Hanson

J. Edward McKinley

British Ambassador

Tom Helmore

Senator Paul Hendershot

Bill Quinn

French Ambassador

Rene Paul

Senator Kanaho

Tiki Santos

Louis Newborn

Paul Stevens

Senator Velez

Raoul De Leon

Night Watchman Mike

Russ Brown

Pidge Anderson

Janet Jane Carty

Lady Maudulayne

Hilary Eaves

Rev. Carney Birch

Chet Stratton

Ray Shaff

John Granger

Celestine Barre

Michele Montau

Bartender

Sid Gould

Manuel

Larry Tucker

Senator Lafe Smith's Girlfriend

Betty Murray

Orchestra Conductor

Meyer Davis

Journalist #1

Irv Kupcinet

Journalist #2

Robert C. Wilson

Journalist #3

Alan Emory

Journalist #4

Jesse Stearns Buscher

Journalist #5

Milton Berliner

Journalist #6

Allan W. Cromley

WHCA President

William Knighton

Senator Harper

Guy M. Gillette

Senator McCafferty

Henry Fountain Ashurst

Indian Ambassador

Raj Mallick

Senator (uncredited)

Leon Alton

Senator (uncredited)

Walter Bacon

Senator (uncredited)

Eddie Baker

Senator (uncredited)

Brandon Beach

Senator (uncredited)

Mario Cimino

Senator (uncredited)

Roger Clark

Senate Gallery Spectator (uncredited)

Paul Cristo

Senator (uncredited)

Harry Denny

Senator (uncredited)

George DeNormand

Senator (uncredited)

George Ford

President's Secretary (uncredited)

Cay Forester

Senator (uncredited)

Bobby Gilbert

Senator (uncredited)

Clive Halliday

Senator (uncredited)

Virgil Johansen

Senate Chamber Reporter (uncredited)

Kenner G. Kemp

Senator (uncredited)

Joseph La Cava

Washington Party Guest (uncredited)

Evelyn Lincoln

Senator (uncredited)

Al McGranary

Senator (uncredited)

William Meader

Senate Official (uncredited)

Harold Miller

Senator (uncredited)

Sol Murgi

Senate Gallery Spectator (uncredited)

Charles Perry

Senator (uncredited)

Paul Power

Senate Staff Clerk (uncredited)

Walter Reed

Senator (uncredited)

Leoda Richards

Senator (uncredited)

Clark Ross

Reporter (uncredited)

John Roy

Senator (uncredited)

Dick Ryan

Senate Staff Clerk (uncredited)

Jeffrey Sayre

Senator (uncredited)

Bernard Sell

Senate Gallery Spectator (uncredited)

Stephen Soldi

Senator (uncredited)

Hal Taggart

Journalist (uncredited)

Wayne Tucker

Drink Refuser (uncredited)

Scoop Jackson