James Stewart

Character: Jefferson Smith

Jean Arthur

Character: Clarissa Saunders

Claude Rains

Character: Joseph Paine

Edward Arnold

Character: Jim Taylor

Guy Kibbee

Character: Governor Hopper

Thomas Mitchell

Character: Diz Moore

Eugene Pallette

Character: Chick McGann

Beulah Bondi

Character: Ma Smith

H.B. Warner

Character: Senate Majority Leader

Harry Carey

Character: President of the Senate

Astrid Allwyn

Character: Susan Paine

Ruth Donnelly

Character: Emma Hopper

Grant Mitchell

Character: Senator MacPherson

Porter Hall

Character: Senator Monroe

Pierre Watkin

Character: Senator Barnes

Charles Lane

Character: Nosey

William Demarest

Character: Bill Griffith

Dick Elliott

Character: Carl Cook

Billy Watson

Character: Peter Hopper

Delmar Watson

Character: Jimmie Hopper

John Russell

Character: Hopper Boy

Harry Watson

Character: Hopper Boy

Garry Watson

Character: Hopper Boy

Larry Simms

Character: Hopper Boy

H.V. Kaltenborn

Character: Radio Broadcaster

Russell Simpson

Character: Kenneth Allen (uncredited)

Frances Gifford

Character: Hopper Girl (uncredited)

Colin James Mackey

Character: Narrator (uncredited)

Wilson Benge

Character: Hopper's Butler (uncredited)

Dickie Jones

Character: Richard Jones (uncredited)

Erville Alderson

Character: Handwriting Expert (uncredited)

Frank Puglia

Character: Handwriting Expert (uncredited)

Maurice Cass

Character: Handwriting Expert (uncredited)

Stanley Andrews

Character: Senator Hodges (uncredited)

Al Bridge

Character: Senator Dwight (uncredited)

Edwin August

Character: Senator (uncredited)

Edmund Cobb

Character: Senator Gower (uncredited)

Sam Ash

Character: Senator Lancaster (uncredited)

Harry A. Bailey

Character: Senator Hammett (uncredited)

Stanley Mack

Character: Senator (uncredited)

Brooks Benedict

Character: Senate Clerk (uncredited)

Wade Boteler

Character: Family Man (uncredited)

Dorothy Comingore

Character: Woman at Station (uncredited)

Chester Conklin

Character: Reporter (uncredited)

Gino Corrado

Character: Barber (uncredited)

Ann Doran

Character: Paine's Secretary (uncredited)

Robert Emmett Keane

Character: Editor (uncredited)

Matt McHugh

Character: Reporter (uncredited)

Kathryn Bates

Character: Committeewoman (uncredited)

Frank Austin

Character: Inventor (uncredited)

William Arnold

Character: Reporter (uncredited)

Tommy Baker

Character: Boy Ranger (uncredited)

Robert Sterling

Character: Senate Reporter (uncredited)

Dub Taylor

Character: Reporter (uncredited)

George Chandler

Character: Reporter (uncredited)

Fred 'Snowflake' Toones

Character: Porter (uncredited)

Jack Carson

Character: Sweeney Farrell (uncredited)

Tommy Bupp

Character: Cheering Boy (uncredited)

Dora Clement

Character: Mrs. McGann (uncredited)

Bert Moorhouse

Character: Man in Senate Building (uncredited)

Harry C. Bradley

Character: Arthur Kim (uncredited)

Lynton Brent

Character: Photographer (uncredited)

Ed Brewer

Character: Senate Reporter (uncredited)

Harlan Briggs

Character: Mr. Edwards (uncredited)

Harry Burkhardt

Character: Senate Reporter (uncredited)

Frederick Burton

Character: Senator Dearhorn (uncredited)

Georgia Caine

Character: Third Radio Speaker (uncredited)

Ken Carpenter

Character: Announcer (uncredited)

Burr Caruth

Character: Townsend (uncredited)

Allan Cavan

Character: Ragner (uncredited)

Eddy Chandler

Character: Reporter (uncredited)

Davison Clark

Character: Committeeman (uncredited)

Richard Clucas

Character: (uncredited)

Shirley Coates

Character: Assistant Bartender (uncredited)

Eddie Coke

Character: Photographer (uncredited)

Hal Cooke

Character: Reporter (uncredited)

Alec Craig

Character: Speaker (uncredited)

Anne Cornwall

Character: Senate Reporter (uncredited)

George Cooper

Character: Waiter (uncredited)

Georgie Cooper

Character: Committeewoman (uncredited)

Jack Cooper

Character: Photographer (uncredited)

Nick Copeland

Character: Senate Reporter (uncredited)

Vernon Dent

Character: Senate Reporter (uncredited)

Maurice Costello

Character: Diggs (uncredited)

Beatrice Curtis

Character: Paine's Secretary (uncredited)

Lew Davis

Character: Senate Clerk (uncredited)

Dulcie Day

Character: Senate Reporter (uncredited)

Wally Dean

Character: Paine's Friend (uncredited)

Harry Depp

Character: Hat Salesman / Secretary (uncredited)

Byron Foulger

Character: Hopper's Secretary (uncredited)

Helen Jerome Eddy

Character: Paine's Secretary (uncredited)

Douglas Evans

Character: Francis Scott Key (uncredited)

Joe Devlin

Character: Waiter (uncredited)

Clyde Dilson

Character: Reporter (uncredited)

John Dilson

Character: Secretary (uncredited)

Neal Dodd

Character: Senate Chaplain (uncredited)

Lester Dorr

Character: Taylor's Stooge (uncredited)

Robert Dudley

Character: Reporter (uncredited)

Edward Earle

Character: Reporter (uncredited)

Jack Egan

Character: Reporter (uncredited)

Eddie Fetherston

Character: Senate Reporter (uncredited)

Mabel Forrest

Character: Senate Reporter (uncredited)

Gladys Gale

Character: Committeewoman (uncredited)

Jack Gardner

Character: Reporter (uncredited)

Mary Gordon

Character: Woman (uncredited)

June Gittelson

Character: Woman at Station (uncredited)

Lorna Gray

Character: Woman at Station (uncredited)

Harry Hayden

Character: First Radio Announcer (uncredited)

Louis Jean Heydt

Character: Soapbox Speaker (uncredited)

John Ince

Character: Senator Fernwick (uncredited)

Frank Jaquet

Character: Senator Byron (uncredited)

Philo McCullough

Character: Senator Albert (uncredited)

Wright Kramer

Character: Senator Carlton (uncredited)

Henry Hebert

Character: Senator (uncredited)

Fred Hoose

Character: Senator (uncredited)

Richard Kipling

Character: Senator (uncredited)

Roger Haliday

Character: Senate Guard (uncredited)

Wilfred Hari

Character: House Boy (uncredited)

Philip Hurlic

Character: Boy Ranger (uncredited)

Olaf Hytten

Character: Butler (uncredited)

Lloyd Ingraham

Character: Committeeman (uncredited)

Mitchell Ingraham

Character: (uncredited)

Dick Jensen

Character: Hoodlum (uncredited)

John Lester Johnson

Character: Butler (uncredited)

Eddie Kane

Character: Reporter (uncredited)

Donald Kerr

Character: Reporter (uncredited)

Milton Kibbee

Character: Senate Reporter (uncredited)

Joe King

Character: Summers (uncredited)

Evalyn Knapp

Character: Reporter (uncredited)

Paul Kruger

Character: Bodyguard (uncredited)

Bobby Larson

Character: Boy Ranger (uncredited)

Billy Lechner

Character: Boy Ranger (uncredited)

Jackie Lowe

Character: Boy Ranger (uncredited)

P.H. Levy

Character: Rabbi (uncredited)

Vera Lewis

Character: Mrs. Edwards (uncredited)

Jack Lindquist

Character: Chorus Member (uncredited)

George Lloyd

Character: Hoodlum (uncredited)

Arthur Loft

Character: Chief Clerk (uncredited)

Jack Low

Character: Hoodlum (uncredited)

Jimmie Lucas

Character: Photographer (uncredited)

Mary MacLaren

Character: Head Sister (uncredited)

Hank Mann

Character: Photographer (uncredited)

Margaret Mann

Character: Nun (uncredited)

Eric Mayne

Character: Man in Senate Building (uncredited)

Ralph McCullough

Character: Assistant Bartender (uncredited)

George McKay

Character: Reporter (uncredited)

Lafe McKee

Character: Veteran at Lincoln Memorial (uncredited)

Ben Taggart

Character: Pompous Man (uncredited)

Field Norton

Character: Pompous Man (uncredited)

Wilfred Lucas

Character: Pompous Man (uncredited)

Sammy McKim

Character: Boy Ranger (uncredited)

James McNamara

Character: Reporter (uncredited)

William Newell

Character: Reporter (uncredited)

Robert Middlemass

Character: Radio Announcer #2 (uncredited)

James Millican

Character: Senate Reporter (uncredited)

Howard M. Mitchell

Character: Shoe Salesman (uncredited)

Charles R. Moore

Character: Porter (uncredited)

Gene Morgan

Character: Reporter (uncredited)

Robert Morgan

Character: Senate Clerk (uncredited)

Ray Nichols

Character: Boy Ranger (uncredited)

Alex Novinsky

Character: Foreign Diplomat (uncredited)

Frank O'Connor

Character: Senator Alfred (uncredited)

Frank Otto

Character: Fisk (uncredited)

Joe Palma

Character: Hoodlum (uncredited)

Spencer Quinn

Character: (uncredited)

Tom Quinn

Character: Senate Reporter (uncredited)

Ed Randolph

Character: Senate Reporter (uncredited)

Charles Regan

Character: Hoodlum (uncredited)

Jack Rice

Character: Lang (uncredited)

Wyndham Standing

Character: Senator Ashman (uncredited)

Ferris Taylor

Character: Senator Carlisle (uncredited)

Jack Richardson

Character: Senator Manchester (uncredited)

Walter Soderling

Character: Senator Pickett (uncredited)

Harry Stafford

Character: Senator Atwater (uncredited)

Victor Travis

Character: Senator Grainger (uncredited)

Carl Stockdale

Character: Senator Burdette (uncredited)

Bob Walker

Character: Senator Holland (uncredited)

Henry Roquemore

Character: Senator (uncredited)

Craig Stevens

Character: Senate Reporter (uncredited)

Paul Stanton

Character: Flood a Newsman (uncredited)

Johnny Russell

Character: Otis Hopper (uncredited)

Walter Sande

Character: Newspaperman with Pipe (uncredited)

Frank M. Thomas

Character: Hendricks (uncredited)

Harry Strang

Character: Bodyguard (uncredited)

Harry Tenbrook

Character: Bodyguard (uncredited)

Dave Willock

Character: Senate Guard (uncredited)

Lloyd Whitlock

Character: Schultz (uncredited)

John Tyrrell

Character: (uncredited)

Frederick Vroom

Character: Paine's Friend (uncredited)

Charles Sullivan

Character: Cab Driver (uncredited)

Arthur Thalasso

Character: Doorman (uncredited)

Edward Thomas

Character: Butler (uncredited)

Laura Treadwell

Character: Mrs. Taylor (uncredited)

Layne Tom Jr.

Character: Boy Ranger (uncredited)

Myonne Walsh

Character: Jane Hopper (uncredited)

Billy Wayne

Character: Reporter (uncredited)

Max Waizmann

Character: Photographer (uncredited)

John Ward

Character: Photographer (uncredited)

Jane Loofbourrow

Character: Committeewoman (uncredited)

Blanche Payson

Character: Committeewoman (uncredited)

Emma Tansey

Character: Committeewoman (uncredited)

Bess Wade

Character: Committeewoman (uncredited)

Florence Wix

Character: Committeewoman (uncredited)

Eleanor Wood

Character: Committeewoman (uncredited)

Jesse Graves

Character: Black Committeeman (uncredited)

Gus Glassmire

Character: Angry Committee Member (uncredited)

Larry Steers

Character: Committeeman (uncredited)

Landers Stevens

Character: Committeeman (uncredited)

William Worthington

Character: Committeeman (uncredited)

Edward Biby

Character: Foreign Diplomat (uncredited)

Count Stefenelli

Character: Foreign Diplomat (uncredited)

David Wade

Character: (uncredited)

Frank McLure

Character: Senator (uncredited)