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)
Robert 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)
