@Health, intelligence is being able to keep multiple points in mind at once so you can connect the dots. Arguing this with you is pointless, if you are unable to keep multiple points in your mind at once.
Going back to the questions originally asked…
As to character… Just look at the two of them. Joe Biden, not tweeting crazy stuff claiming the election is being stolen or going to court. Trump on the other hand saying an election is being stolen via fraud and making up all sorts of fake stuff. Have you read comments from Trump supporters on Brietbart and other extremist sites? You have people talking about committing violence in response. So when you say character or policy, what about Trump’s lies potentially leading to radicalized right-wing extremists who are willing to commit deadly violence (remember Oklahoma City, it was a white right-wing nut). I sure hope your inevitable response about how this is just fear-mongering is correct, but I fear we will be dealing with right-wing extremists willing to use violence for the next decade or two as a result of Trump’s destabilizing actions in response to the election.