The nominating fight between Selina and her rivals reaches its climax, as their race comes to a historic finish. Series finale.

Selina evaluates her past and present campaigns. Jonah's personal life sparks interest among the press. Amy makes an important decision.

Selina tries to arrange a meeting via her Finnish contact Minna. Gary helps Catherine plan a big event. Jonah and Amy push an anti-vax message in Pennsylvania. Mike finds a new home. Richard may have an enemy.

Selina and team head to South Carolina, where she seeks an endorsement from a key leader. Gary gets a long-awaited promotion, while Marjorie excels in her new role.

In the run-up to the first debate, Selina makes a novel campaign proposal. Comments by Jonah create blowback. Dan and Amy take a road trip.

Facing increased scrutiny heading into Super Tuesday, Selina visits Mike to deflect attention from Andrew's legal troubles. Jonah and Amy ramp up their anti-Selina campaign rhetoric. Dan attempts to exploit Richard.

At an Aspen retreat for rich donors, Selina deals with potential adversaries and allies. Amy's behavior raises Gary's suspicions.