Swing Vote is a 2008 comedy-drama film about an entire U.S. presidential election determined by the vote of one man. It was directed by Joshua Michael Stern and starred Kevin Costner, Paula Patton, Kelsey Grammer, Dennis Hopper, Nathan Lane, Stanley Tucci, George Lopez and Madeline Carroll. The film was released on August 1, 2008. Wikipedia
Molly Johnson: Maybe I should tell them the truth. Bud Johnson: What're you talking about? Tell them what? Molly Johnson: That *I* was going to be the one to cast the vote.