cast
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Jason Clarke
Ted Kennedy
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Kate Mara
Mary Jo Kopechne
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Ed Helms
Joseph Gargan
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Bruce Dern
Joseph Kennedy
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Jim Gaffigan
Paul Markham
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Olivia Thirlby
Rachel Schiff
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Clancy Brown
Robert McNamara
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Taylor Nichols
Ted Sorensen
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John Fiore
Chief Arena
- Gillian Mariner Gordon Cricket
- Katie Henoch Suzy
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Lexie Roth
Nance Lyons
- Angela Hope Smith Maryellen Lyons
- Vincent Tycer David Burke
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Victor Warren
Stephen Smith
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David De Beck
Sargent Shriver
- Barry Press Burke Marshall
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Matthew Lawler
Dun Gifford
- Beth Petrou Ann Gargan
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Thomas Kee
Walter Steele
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Andria Blackman
Joan Kennedy
- Donald Watson Dr. Watt
- Walter Driscoll Dr. Mills
- Joe Chase John Farrar
- Joseph Zamparelli Officer Look
- Charlotte Dore Gwen Kopechne
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Tim Jackson
Joseph Kopechne
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Damien Di Paola
Ray LaRosa
- Ed Peed Eugene Frieh
- Bill Humphreys James Reston
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Gary Tanguay
TV Interviewer
- Diana Boudreau Police Secretary
- Alison Wachtler Liz Trotta
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Tony Viveiros
Floor Producer
- Sean Patrick Hopkins Ross Richards
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Tamara Hickey
Marilyn Richards
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Nancy O'Brien
Neighbor
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Tom O'Brien
Neighbor's Husband
- Noah Carpenter Teddy Jr.
- Sarah Elizabeth Mitchell Senate Secretary
- A.J. Accardi Hotel Clerk
- Theresa Curran Cantor
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Michele Proude
Vicki
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Michael Fennimore
Chief of Staff
- George Capaccio Doctor
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Dustin Tucker
Senatorial Aide
- Jack Harte Reporter #1
- Bob Jaffe Reporter #2
- Brian Currie Reporter #3
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Paul Pape
Dick Drayne (voice)
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Jake Head
James Smith (voice)
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Chris Edgerly
Edmund Dinis (voice)
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Wally Wingert
Newscaster (voice)
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Piotr Michael
Newscaster (voice)
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Bill Mootos
Older Reporter
- Jody Ebling Ethel Kennedy
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Philip Dorn Hebert
Jack Crimmins
- Holt Murray Mr. Samuels
- Sawyer Murray Donnie
- Rick Malone Steele Cronie
- Rick Hamilton Ferry Captain
- Caleb Enos Deckhand
- Paul Taft Vineyard Gazette Photographer
- David Callanan Charles Tretter
- Thomas Whitestone Organist
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Patrick Sheehan
Lawyer
- Jeff Savage John Culver
- Tom Briody Lawyer
- David Lucas Lawyer
- Ed O'Keefe Funeral Priest
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Thomas Brogan
Edgartown Policeman
- Robert Burke Admin Worker
- Charles Mathison Admin Worker
- Luke Nelson Admin Worker
- Robert Tremouille Admin Worker
- Skye Gladstone Dike House Inhabitant
- Timothy Canady Security Agent
- Patrick Parhiala Security Agent
- Whitney Cass Security Agent
- Robert Conley Security Agent
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Michael Swanson
Security Agent
- Ralph Bennett Fire Truck Driver
- Nathan Bruckler Tow Truck Driver
- Camille Faman Female Employee
- Carrie Ann Quinn RMV Attendant
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Susan Garfield
Senate Staffer (uncredited)
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Marinko Radakovic
Reporter
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Paul Bellefeuille
Dike House Resident (uncredited)
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Joe Cali
Reporter (uncredited)
- Rob DiNinni Reporter #4 (uncredited)
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Stephan F Feeley
Funeral guest / mourner (uncredited)
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William Galatis
Shiretown Inn Guest (uncredited)
- Johnny Hawe Stephen Sorenson (uncredited)
- Bobby Kenney Investigative News Reporter (uncredited)
- Dov Kling-Levine Protester / Local (uncredited)
- Jimmy Malcolm News Photographer (uncredited)
- Jason Mulcahy Reporter (uncredited)
- Anthony Pelton Plymouth Pennsylvania Polic Officer (uncredited)
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Bill Porter
Investigative News Reporter (uncredited)
- Harold Rudolph Funeral attendee (uncredited)
- John Sarnie Mourner (uncredited)
- Alexander Platt Stan Moore
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Sigrid Lium
Senate Staffer (uncredited)
- Kimberly Mae Waller Funeral Guest (uncredited)