Episode list

Elizabeth faces a crisis when a military conflict in international waters spirals to the brink of nuclear confrontation; with the imminent threat of impeachment looming, Elizabeth and Henry make a list of things to do while she's still in office.

President Elizabeth McCord kicks off a new landmark political initiative with help from members of the World Cup Champion U.S. Women's Soccer team, while Flo Avery (Cicely Tyson), who was born the day women were granted the right to vote, looks on. Opposing the initiative is Senator Amy Ross (Tyne Daley) from Ohio. Also, the McCords overcome last-minute obstacles to pull off a spectacular family celebration with a reunion of familiar faces, that includes a performance by Peter Frampton.

Elizabeth secretly travels to Iran in an attempt to prevent a coup that could impact President Dalton's administration. Also, she brings her staff up to speed on the investigation into Marsh's death. Anna Deveare Smith guest stars.

Elizabeth and the cabinet must brace for fallout after President Dalton announces a retaliatory nuclear strike on a nation that has launched missiles at the US.

When contact with Air Force One has been lost with the president and speaker of the House aboard, the vice president in surgery and the president pro tempore of the Senate incapacitated, Madam Secretary became Madam acting President. Her daughter was found in a hotel room with the President's son and her husband is being forced to turn one of his Russian students into an American spy. The secretary was supposed to sing a novelty song at the Eastern Trade Conference. Fortunately, she didn't.

When Elizabeth receives shocking news about an important political operative, she navigates a tricky political situation with President Dalton, who she learns may be considering replacing her as Secretary of State. Also, Stevie and Jareth (Christopher O'Shea) get engaged.

Elizabeth is ready to leave the state department and announce her run for president. Terrorists attack the UN delegation in Geneva.

Elizabeth must be careful of what she says and does while dealing with a refugee situation and being shadowed by a reporter.

As Elizabeth prepares to declare her candidacy for president, she must deal with fallout from a news article alleging she had an affair with President Dalton during her CIA days; Mike B. and Jay adjust in their roles as campaign staffers.

Elizabeth, Henry and Isabelle launch their own investigation into the plane crash that killed former Secretary of State Vincent Marsh. Also, Nadine takes a step back into the dating pool when she agrees to go on a date with a NASA scientist.