Here's a link to the video for the 'Save the Day' campaign, a public service announcement put together by Joss Whedon to encourage people to get out and vote in the US election.
It's hilarious. It has a lot of the 'A-list' of actors from The Avengers and other blockbusters, and targets people who aren't going to vote out of apathy or cynicism. The video doesn't mention Trump or Clinton by name, but it's very clear that they are encouraging people to vote for a particular candidate or rather, not vote for a particular candidate. Now get out and vote, because if you do, Mark Ruffalo will have to get naked!