Peter Vance

Patrick Landry

James Blaine (4 episodes)

Todd Penn (3 episodes)

Richard

Self (1 episode)

Principal (voice) (1 episode)

Self - Guest (2 episodes)

Producer

Stu Magnusson (8 episodes)

Henry

Anton Valmont (3 episodes)

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Alan Van Der Kamp (1 episode)

Adrian Capulet

(voice) (3 episodes)

Self - Guest (1 episode)

Self (1 episode)

Glen (voice) (1 episode)

Self (1 episode)

Stephen Sondheim

Colonel Flynn (voice) (1 episode)

Kenny

William Griffin

Josh Lyman

Judge Miller

Paul Bremer

Carlton Stanton

Magnus

Arthur Cochran (13 episodes)

Executive Producer (13 episodes)

Self (1 episode)

Agent Sieve (voice) (5 episodes)

Leader Elk (voice) (1 episode)

Michael Fisk

Dr. Rick Stanton

Self (1 episode)

Calvin Cooper (1 episode)

James L. Barksdale (6 episodes)

Self (1 episode)

DiFranco

President Gray

Joseph Lawrence (35 episodes)

Director (1 episode)

Arthur Parsons

Clyde

Gene

Bob

Mr. Schneedy

Albert Forest (1 episode)

Dean Armitage

Mitch (2 episodes)

Norman Mulcahey

Self (3 episodes)

Hubert Humphrey

Fred Rose

Jonathan Cooke (10 episodes)

Roger Peralta (4 episodes)

Senator (Ned) (1 episode)

Magnus (2 episodes)

Macy (4 episodes)

Magnus Hirschfeld (2 episodes)

Frank Maddox (1 episode)

Pence Humphreys (1 episode)

Marshall

Don DaGradi

Nicky Grant

John Flynn

Pete Harrison (22 episodes)

William Jennings Bryan (1 episode)

Jack Cay

Abraham Paige (2 episodes)

Hughie (1 episode)

Councilman Pillner (1 episode)

Steve Hadley

Leo Maxiell

Mitch

Attorney Miklin (1 episode)

Timothy Carter (uncredited) (1 episode)

Adam Wilson / Adam Roston (1 episode)

Dan Stark (20 episodes)

Producer (20 episodes)

Toby Grossnickel (1 episode)

Dean Berry (1 episode)

Professor Saunders

Mack (2 episodes)

Self (1 episode)

Prosecutor

Self - Guest (1 episode)

Self (1 episode)

Danny Tripp (22 episodes)

Director (1 episode)

Self (1 episode)

Adam

Self (1 episode)

Anthony

Al Lowell

Self (3 episodes)

Self (6 episodes)

Self - Cameo (uncredited) (1 episode)

Stu (voice) (1 episode)

Self (1 episode)

Meg's Husband (2 episodes)

J.J. Camden

(1 episode)

Self - Nominee (3 episodes)

Lloyd

Josh Lyman (154 episodes)

Writer (2 episodes)

Hal

John Morgan, KTML News

Tom Anderson (uncredited) (1 episode)

Brian Shushan

(13 episodes)

Bob Ghery

Rick Weston

Miles Lawrence

(1 episode)

(1 episode)

Tom LaSalle (credited as Brad Whitford)

Carl Witnaur

Steve Bell (1 episode)

Professor

'Mack' McCarthy

Sean O'Brien (2 episodes)

Eric Gordon

Daniel Trepkos (1 episode)

Tommy Donnelly

Doug (1 episode)

Thomas Fink

Larry Lake

Norman Gardner (4 episodes)

Jamey Collins

Bobby Lee

Paul Ivanovich

(13 episodes)

Fleck

Randy

Dr. Tyler

Charles Phalen

Jamie Kemp

Dr. Donald Ballentine

Tom Dash (1 episode)

Roger

Mike Todwell

Jack Ford

Leon Trepper

Terry Reilly

Dillart (1 episode)

Self (44 episodes)