Madam Secretary season 4

The fourth season of Madam Secretary an American political drama television series originally aired in the United States on CBS from October 8, 2017, through May 20, 2018. This season was produced by CBS Television Studios, with Barbara Hall and Lori McCreary as showrunner and executive producer, respectively. Debuting on September 21, 2014. Madam Secretary was renewed for a fifth season on April 18, 2018.

Main

 * Téa Leoni as Dr. Elizabeth McCord, the United States Secretary of State
 * Tim Daly as Dr. Henry McCord, Elizabeth's husband and a Central Intelligence Agency operative
 * Keith Carradine as Conrad Dalton, President of the United States
 * Erich Bergen as Blake Moran, Elizabeth's personal assistant
 * Patina Miller as Daisy Grant, Elizabeth's press coordinator
 * Geoffrey Arend as Matt Mahoney, Elizabeth's speechwriter
 * Sebastian Arcelus as Jay Whitman, Elizabeth's policy advisor and later chief of staff
 * Sara Ramirez as Kat Sandoval, Elizabeth's new policy advisor
 * Kathrine Herzer as Alison McCord, Elizabeth and Henry's younger daughter
 * Evan Roe as Jason McCord, Elizabeth and Henry's son
 * Wallis Currie-Wood as Stephanie "Stevie" McCord, Elizabeth and Henry's older daughter; later, Dmitri's girlfriend
 * Željko Ivanek as Russell Jackson, White House Chief of Staff
 * Chris Petrovski as Dmitri Petrov, a former Russian spy who joins the Central Intelligence Agency to work for Henry
 * Bebe Neuwirth as Nadine Tolliver, Elizabeth's chief of staff

Guests

 * Morgan Freeman as Frawley, the Chief Justice of the United States
 * Yuval David as Matvey Sokolov, a Russian special agent
 * Christine Ebersole as Lydia Dalton, the first lady of the United States
 * Keone Young as Minister Myambyn Sendoo
 * Elpidia Carrillo as President Daphne Tejeda

Development
Madam Secretary was renewed for a fourth season on March 23, 2017.

Casting
Bebe Neuwirth left the cast after the third episode of the season. Sara Ramirez joined the cast as Kat Sandoval as a series regular. Hall said of Ramirez: "She brings a fresh perspective and a fun, energetic quality to the State Department staff."

Broadcast
Season four of Madam Secretary premiered on October 8, 2017.