Clare's absence causes problems for Frank on the campaign trail amid rumors of a marital rift. Claire tries to strike out on her own.

As Claire's mother works to raise funds in support of Frank's competitors, Frank reneges on his promise not to interfere in Claire's campaign and co-opts the State of the Union Address to endorse Claire's competitor. Viktor Petrov's heavy handedness and growing paranoia further cloud his relations with the President. Written by David Foss

Claire joins Frank as he campaigns in South Carolina, but he doesn't trust her. A disastrous scandal blindsides Frank on primary day.

Claire threatens Frank while Frank makes a politically bold move that may provoke Russia.

Claire advises the VP Donald Blythe on dealing with Russia. Further investigation of Lucas Goodwin dredges up his accusations against Frank.

Claire clashes with the Secretary of State Durant over her involvement in negotiations with Russia. Dunbar must choose between her campaign and her ethics.

While trying to pass a bill against illegal gun usage President Underwood faces challenges from multiple fronts which include taking a choice between an attack against a Muslim extremists organisation in the Middle East and acquiring a potential advantage in winning the election .

Formidable as ever, Frank and Claire have their eyes on the big picture as they manipulate a potential running mate and push a gun bill.

At the convention, Frank and his team publicly push for Secretary of State Durant to be chosen as his running mate, but privately push a different agenda.

As Frank deals with a new threat to his candidacy, Claire has doubts about their plan. Claire faces a difficult decision concerning her mother's health.

Frank ups the ante on the war on terror to counter Conway's public criticism of his lack of action. Tom joins Claire on the campaign trail.

Frank asks Conway to help deal with extremists threatening to murder hostages. Tom Hammerschmidt digs deeper into the allegations against Frank.

As the hostage situation continues, Claire secretly negotiates with an extremist leader. Frank confronts Hammerschmidt.