See the image now before Marty goes back and makes him disappear altogether.

Donald Trump is doing surprisingly well as the potential Republican candidate for the 2016 election. People are asking themselves how it's possible despite all the offensive things he's saying. 

One answer from @Snowcone965: maybe he's so successful because he's the real life Biff Tannen. Too far-fetched? They already look very similar. Plus, based on Trump's backward views on Mexico, they're probably both equally obsessed with the film A Fistful of Dollars.

Sources: @Snowcone965