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