Kevin Spacey leads as Francis Underwood (why not “Frankie”?), US Congressman from South Carolina and Democratic whip. His wife Claire (Robin Wright) runs a non-profit connected to Frankie’s political shenanigans. Peter Russo (Corey Stoll) is another Democrat from Pennsylvania, who acts as an ally, and Garrett Walker (Michael Gill) is getting inaugurated as a Democratic president.
Note: My Netflix records say that I watched Episode 2, but I think it was the Pilot.