It would appear that someone is playing a prank on Chance The Rapper, as a search for ChanceTheRapper.com redirects to DonaldJTrump.com, the official website for the Trump campaign. Which is strange—especially because that's not even Chance's domain.
Chance, whose official website is ChanceRaps.com (the domain name ChanceTheRapper.com has been owned by someone else since at least April of 2015), has been vocal about political and social issues recently, critiquing Spike Lee for his film Chiraq and beginning on ongoing feud with the filmmaker who mentioned that Chance's father works for controversial Chicago mayor Rahm Emanuel. But as to how he plans to vote, it would appear he's remaining mum for now.
Representatives for Chance The Rapper and Donald Trump were not immediately available for comment.