The senators adjust to their new roommate, and his girlfriend, as preparations for the Congressional Delegation to Afghanistan continue.

After a surprise explosion in Afghanistan leaves Louis recovering from an injury, Adriana makes controversial private arrangements for the group to return home.

Tempers heat up as Gil John's wife Maddie arrives to help him prepare for his upcoming debate with Digger Mancusi. Meanwhile, Louis continues to recover in the hospital and Senator Armiston leads an ethics committee investigation against Robert.

Louis continues to gain constituent support as Shelby chronicles his recovery. Gil John faces Digger Mancusi in a town hall where he struggles to keep up with his polished and well-liked opponent, despite much help and coaching from Robert and Andy.

Rosalyn organizes a prayer brunch to celebrate Louis' homecoming from the hospital, but the Senators and their fellow Democrats find it difficult to set aside their differences. Aaron and Tammy's relationship continues to grow and Lola has a surprise in store for James.

Robert proves to the ethics committee that he would never take a mohair suit while Andy prepares to deliver a rebuttal after the State of the Union. Louis is put in the spotlight on his first day back when James mistakenly tweets a photo intended for Lola from the wrong account.

Louis decides to help showgirls organize, but the Watt brothers stand in his way. A video of Gil John hitting a soldier with a chair in Afghanistan goes viral so Maddie looks for a way to humanize him and Andy's Vanity Fair cover shoot takes an unexpected direction.

When another senator dies unexpectedly, Gil John is asked to organize the funeral arrangements. Louis wins the Nevada primary but Robert has to face off in a Pennsylvania debate to cool the competition.

Gil John helps a former player become a war hero, and quickly regrets it. Robert hosts an engagement party for his latest matchmaking success, but isn't prepared for the surprise guest.

Gil John pays a visit to the Watt brothers, Louis worries when an old college friend threatens to share stories, and Andy tries to talk his way out of "Gaffergate," only to learn he's got bigger image problems.

Gil John tries to right things after the Watts brothers "Swift Boat" his former player. Julie shocks Louis and Louise by announcing she's pregnant from an anonymous donor, while Adriana confronts Marta the housekeeper about Andy. Louis tries to debate Penn Jillette, but he's no match for what the magician has up his sleeves.

The senators head to a Republican retreat at a Virginia plantation, where they're haunted by the ghosts of slavery, Ronald Reagan and their exes. After a soul-cleansing bonfire with the housemates, Gil John awakes with a new fire in his belly.

Gil John finally breaks through to daughter Cee, then gets a lesson in civility from the women's caucus. Andy heads to Miami to try and win back Adriana, and gets some insights into his "condition" from a therapist. Meanwhile, Robert ignores his advisors and helps register black voters.

As the election returns come in, Gil John meets with a presidential campaign advisor, while Robert wonders if he still has a job. Katherine and Julie discover their wedding has been turned into a major political event -- after they arrive.