Bryan Cranston as Lyndon B. Johnson

Anthony Mackie as Martin Luther King, Jr.

Melissa Leo as Lady Bird Johnson

Frank Langella as Sen. Richard Russell

Bradley Whitford as Hubert Humphrey

Stephen Root as J. Edgar Hoover

Todd Weeks as Walter Jenkins

Ray Wise as Senator Everett Dirksen

Ken Jenkins as Howard W. Smith

Dohn Norwood as Ralph Abernathy

Mo McRae as Stokely Carmichael

Marque Richardson as Bob Moses

Aisha Hinds as Fannie Lou Hamer

Joe Morton as Roy Wilkins

Eric Pumphrey as David Dennis

Tim True as Deke Deloach

Bo Foxworth as Robert McNamara

Jeff Doucette as Senator Eastland

Hilary Ward as Coretta King

Spencer Garrett as Walter Reuther

Randy Oglesby as Senator Strom Thurmond

Ned Van Zandt as Senator Fulbright

Joe O'Connor as Senator Byrd

Bruce Nozick as Stanley Levison

Samantha Bogach as Luci Johnson

Hal Landon Jr. as Speaker John McCormack

Dan Desmond as Rep. Bill McCullough

Stoney Westmoreland as Rep. James Corman

Matthew Glave as Governor Sanders

Toby Huss as Governor Johnson

Corby Sullivan as Deputy Price

Regi Davis as Aaron Henry

Gregory Marcel as Edwin King

Zachary Barton as JFK's Secretary

Kevin Brief as New Orleans Announcer

Talia Toms as MLK's Girlfriend

Dale E. Turner as Choir Director

Thomas Lumberg Jr. as Secret Service Agent

Keith Barber as Older Man

Ethan Phillips as Joe Alsop