James Stewart
Role: Jefferson Smith
Jean Arthur
Role: Clarissa Saunders
Claude Rains
Role: Joseph Paine
Edward Arnold
Role: Jim Taylor
Guy Kibbee
Role: Governor Hopper
Thomas Mitchell
Role: Diz Moore
Eugene Pallette
Role: Chick McGann
Beulah Bondi
Role: Ma Smith
H.B. Warner
Role: Senate Majority Leader
Harry Carey
Role: President of the Senate
Astrid Allwyn
Role: Susan Paine
Ruth Donnelly
Role: Emma Hopper
Grant Mitchell
Role: Senator MacPherson
Porter Hall
Role: Senator Monroe
Pierre Watkin
Role: Senator Barnes
William Demarest
Role: Bill Griffith
Dick Elliott
Role: Carl Cook
Billy Watson
Role: Peter Hopper
Delmar Watson
Role: Jimmie Hopper
John Russell
Role: Hopper Boy
Harry Watson
Role: Hopper Boy
Garry Watson
Role: Hopper Boy
Larry Simms
Role: Hopper Boy
H.V. Kaltenborn
Role: Radio Broadcaster
Russell Simpson
Role: Kenneth Allen (uncredited)
Frances Gifford
Role: Hopper Girl (uncredited)
Colin James Mackey
Role: Narrator (uncredited)
Wilson Benge
Role: Hopper's Butler (uncredited)
Dickie Jones
Role: Richard Jones (uncredited)
Erville Alderson
Role: Handwriting Expert (uncredited)
Frank Puglia
Role: Handwriting Expert (uncredited)
Maurice Cass
Role: Handwriting Expert (uncredited)
Stanley Andrews
Role: Senator Hodges (uncredited)
Al Bridge
Role: Senator Dwight (uncredited)
Edwin August
Role: Senator (uncredited)
Edmund Cobb
Role: Senator Gower (uncredited)
Sam Ash
Role: Senator Lancaster (uncredited)
Harry A. Bailey
Role: Senator Hammett (uncredited)
Stanley Mack
Role: Senator (uncredited)
Brooks Benedict
Role: Senate Clerk (uncredited)
Wade Boteler
Role: Family Man (uncredited)
Dorothy Comingore
Role: Woman at Station (uncredited)
Chester Conklin
Role: Reporter (uncredited)
Gino Corrado
Role: Barber (uncredited)
Ann Doran
Role: Paine's Secretary (uncredited)
Robert Emmett Keane
Role: Editor (uncredited)
Matt McHugh
Role: Reporter (uncredited)
Kathryn Bates
Role: Committeewoman (uncredited)
Frank Austin
Role: Inventor (uncredited)
William Arnold
Role: Reporter (uncredited)
Tommy Baker
Role: Boy Ranger (uncredited)
Robert Sterling
Role: Senate Reporter (uncredited)
Dub Taylor
Role: Reporter (uncredited)
George Chandler
Role: Reporter (uncredited)
Fred 'Snowflake' Toones
Role: Porter (uncredited)
Jack Carson
Role: Sweeney Farrell (uncredited)
Tommy Bupp
Role: Cheering Boy (uncredited)
Dora Clement
Role: Mrs. McGann (uncredited)
Bert Moorhouse
Role: Man in Senate Building (uncredited)
Harry C. Bradley
Role: Arthur Kim (uncredited)
Lynton Brent
Role: Photographer (uncredited)
Ed Brewer
Role: Senate Reporter (uncredited)
Harlan Briggs
Role: Mr. Edwards (uncredited)
Harry Burkhardt
Role: Senate Reporter (uncredited)
Frederick Burton
Role: Senator Dearhorn (uncredited)
Georgia Caine
Role: Third Radio Speaker (uncredited)
Ken Carpenter
Role: Announcer (uncredited)
Burr Caruth
Role: Townsend (uncredited)
Allan Cavan
Role: Ragner (uncredited)
Eddy Chandler
Role: Reporter (uncredited)
Davison Clark
Role: Committeeman (uncredited)
Richard Clucas
Role: (uncredited)
Shirley Coates
Role: Assistant Bartender (uncredited)
Eddie Coke
Role: Photographer (uncredited)
Hal Cooke
Role: Reporter (uncredited)
Alec Craig
Role: Speaker (uncredited)
Anne Cornwall
Role: Senate Reporter (uncredited)
George Cooper
Role: Waiter (uncredited)
Georgie Cooper
Role: Committeewoman (uncredited)
Jack Cooper
Role: Photographer (uncredited)
Nick Copeland
Role: Senate Reporter (uncredited)
Vernon Dent
Role: Senate Reporter (uncredited)
Maurice Costello
Role: Diggs (uncredited)
Beatrice Curtis
Role: Paine's Secretary (uncredited)
Lew Davis
Role: Senate Clerk (uncredited)
Dulcie Day
Role: Senate Reporter (uncredited)
Wally Dean
Role: Paine's Friend (uncredited)
Harry Depp
Role: Hat Salesman / Secretary (uncredited)
Byron Foulger
Role: Hopper's Secretary (uncredited)
Helen Jerome Eddy
Role: Paine's Secretary (uncredited)
Douglas Evans
Role: Francis Scott Key (uncredited)
Joe Devlin
Role: Waiter (uncredited)
Clyde Dilson
Role: Reporter (uncredited)
John Dilson
Role: Secretary (uncredited)
Neal Dodd
Role: Senate Chaplain (uncredited)
Lester Dorr
Role: Taylor's Stooge (uncredited)
Robert Dudley
Role: Reporter (uncredited)
Edward Earle
Role: Reporter (uncredited)
Jack Egan
Role: Reporter (uncredited)
Eddie Fetherston
Role: Senate Reporter (uncredited)
Mabel Forrest
Role: Senate Reporter (uncredited)
Gladys Gale
Role: Committeewoman (uncredited)
Jack Gardner
Role: Reporter (uncredited)
Mary Gordon
Role: Woman (uncredited)
June Gittelson
Role: Woman at Station (uncredited)
Lorna Gray
Role: Woman at Station (uncredited)
Harry Hayden
Role: First Radio Announcer (uncredited)
Louis Jean Heydt
Role: Soapbox Speaker (uncredited)
John Ince
Role: Senator Fernwick (uncredited)
Frank Jaquet
Role: Senator Byron (uncredited)
Philo McCullough
Role: Senator Albert (uncredited)
Wright Kramer
Role: Senator Carlton (uncredited)
Henry Hebert
Role: Senator (uncredited)
Fred Hoose
Role: Senator (uncredited)
Richard Kipling
Role: Senator (uncredited)
Roger Haliday
Role: Senate Guard (uncredited)
Wilfred Hari
Role: House Boy (uncredited)
Philip Hurlic
Role: Boy Ranger (uncredited)
Olaf Hytten
Role: Butler (uncredited)
Lloyd Ingraham
Role: Committeeman (uncredited)
Mitchell Ingraham
Role: (uncredited)
Dick Jensen
Role: Hoodlum (uncredited)
John Lester Johnson
Role: Butler (uncredited)
Eddie Kane
Role: Reporter (uncredited)
Donald Kerr
Role: Reporter (uncredited)
Milton Kibbee
Role: Senate Reporter (uncredited)
Joe King
Role: Summers (uncredited)
Evalyn Knapp
Role: Reporter (uncredited)
Paul Kruger
Role: Bodyguard (uncredited)
Bobby Larson
Role: Boy Ranger (uncredited)
Billy Lechner
Role: Boy Ranger (uncredited)
Jackie Lowe
Role: Boy Ranger (uncredited)
P.H. Levy
Role: Rabbi (uncredited)
Vera Lewis
Role: Mrs. Edwards (uncredited)
Jack Lindquist
Role: Chorus Member (uncredited)
George Lloyd
Role: Hoodlum (uncredited)
Arthur Loft
Role: Chief Clerk (uncredited)
Jack Low
Role: Hoodlum (uncredited)
Jimmie Lucas
Role: Photographer (uncredited)
Mary MacLaren
Role: Head Sister (uncredited)
Hank Mann
Role: Photographer (uncredited)
Margaret Mann
Role: Nun (uncredited)
Eric Mayne
Role: Man in Senate Building (uncredited)
Ralph McCullough
Role: Assistant Bartender (uncredited)
George McKay
Role: Reporter (uncredited)
Lafe McKee
Role: Veteran at Lincoln Memorial (uncredited)
Ben Taggart
Role: Pompous Man (uncredited)
Field Norton
Role: Pompous Man (uncredited)
Wilfred Lucas
Role: Pompous Man (uncredited)
Sammy McKim
Role: Boy Ranger (uncredited)
James McNamara
Role: Reporter (uncredited)
William Newell
Role: Reporter (uncredited)
Robert Middlemass
Role: Radio Announcer #2 (uncredited)
James Millican
Role: Senate Reporter (uncredited)
Howard M. Mitchell
Role: Shoe Salesman (uncredited)
Charles R. Moore
Role: Porter (uncredited)
Gene Morgan
Role: Reporter (uncredited)
Robert Morgan
Role: Senate Clerk (uncredited)
Ray Nichols
Role: Boy Ranger (uncredited)
Alex Novinsky
Role: Foreign Diplomat (uncredited)
Frank O'Connor
Role: Senator Alfred (uncredited)
Frank Otto
Role: Fisk (uncredited)
Joe Palma
Role: Hoodlum (uncredited)
Spencer Quinn
Role: (uncredited)
Tom Quinn
Role: Senate Reporter (uncredited)
Ed Randolph
Role: Senate Reporter (uncredited)
Charles Regan
Role: Hoodlum (uncredited)
Jack Rice
Role: Lang (uncredited)
Wyndham Standing
Role: Senator Ashman (uncredited)
Ferris Taylor
Role: Senator Carlisle (uncredited)
Jack Richardson
Role: Senator Manchester (uncredited)
Walter Soderling
Role: Senator Pickett (uncredited)
Harry Stafford
Role: Senator Atwater (uncredited)
Victor Travis
Role: Senator Grainger (uncredited)
Carl Stockdale
Role: Senator Burdette (uncredited)
Bob Walker
Role: Senator Holland (uncredited)
Henry Roquemore
Role: Senator (uncredited)
Craig Stevens
Role: Senate Reporter (uncredited)
Paul Stanton
Role: Flood a Newsman (uncredited)
Johnny Russell
Role: Otis Hopper (uncredited)
Walter Sande
Role: Newspaperman with Pipe (uncredited)
Frank M. Thomas
Role: Hendricks (uncredited)
Harry Strang
Role: Bodyguard (uncredited)
Harry Tenbrook
Role: Bodyguard (uncredited)
Dave Willock
Role: Senate Guard (uncredited)
Lloyd Whitlock
Role: Schultz (uncredited)
John Tyrrell
Role: (uncredited)
Frederick Vroom
Role: Paine's Friend (uncredited)
Charles Sullivan
Role: Cab Driver (uncredited)
Arthur Thalasso
Role: Doorman (uncredited)
Edward Thomas
Role: Butler (uncredited)
Laura Treadwell
Role: Mrs. Taylor (uncredited)
Layne Tom Jr.
Role: Boy Ranger (uncredited)
Myonne Walsh
Role: Jane Hopper (uncredited)
Billy Wayne
Role: Reporter (uncredited)
Max Waizmann
Role: Photographer (uncredited)
John Ward
Role: Photographer (uncredited)
Jane Loofbourrow
Role: Committeewoman (uncredited)
Blanche Payson
Role: Committeewoman (uncredited)
Emma Tansey
Role: Committeewoman (uncredited)
Bess Wade
Role: Committeewoman (uncredited)
Florence Wix
Role: Committeewoman (uncredited)
Eleanor Wood
Role: Committeewoman (uncredited)
Jesse Graves
Role: Black Committeeman (uncredited)
Gus Glassmire
Role: Angry Committee Member (uncredited)
Larry Steers
Role: Committeeman (uncredited)
Landers Stevens
Role: Committeeman (uncredited)
William Worthington
Role: Committeeman (uncredited)
Edward Biby
Role: Foreign Diplomat (uncredited)
Count Stefenelli
Role: Foreign Diplomat (uncredited)
David Wade
Role: (uncredited)
Frank McLure
Role: Senator (uncredited)
