Not that you needed an eighth reason to watch Game Change, but here you go: Deadline reports that Ron Livingston has been added to the cast of the political drama about the 2008 presidential election.

Livingston—who you know from Swingers, and your girlfriend knows from Sex and the City—will play Mark Wallace, a senior adviser to the John McCain presidential campaign who helped Sarah Palin in her debate prep. He's the fourth member of Team McCain announced, following in the footsteps of Ed Harris (McCain), Julianne Moore (Palin) and Woody Harrelson (campaign strategist Steve Schmidt). As of yet, no one from the Barack Obama campaign has been announced.

[via Deadline]