But in regards to the people who are more undecided, there seems to me to be considerable room to plausibly criticize this case as politically motivated and with a biased judge; for example, see
here (granted, it also admits that Trump's legal team did a poor job, partially due to Trump himself). And sure, it's from a conservative source, but not one that cares for Trump all that much. But even if you don't agree with the points made there or other criticisms I've seen of the case against Trump, there's at least a plausible case to be made that this was a dubious case that was politically motivated, which will obviously make some people think Trump is being treated unfairly.