Sean Penn with Jeanne Balibas and Alexandra Maria Lara at Cannes. via Telegraph

Sean Penn has seen his share of Presidential elections. But yesterday, during a press opp in Cannes, the Oscar winner called the one on November 4 "the most important election certainly in my lifetime, maybe ever."

As if we needed another reason to go to the polls on November 4. If you or someone you know are not yet registered to vote, go here. If you're under 18, you may not be able to pull the lever, but you can still make a difference!