I would hope that the jurors would only consider the evidence, or more to the point, the lack of evidence of any criminality on Trump's part. If they did, acquital would be assured.
But if jurors only went by evidence, the grand jury would not have indicted in the first place. Read the indictment. Instead of saying "Defendant violated section blah-blah of criminal code whatsis, based on x and y evidence," Willis just recited a list of things trump did and put "criminally" in front of them. Really childish, like middle schoolers putting on a pay about a trial.
The trial is motivated, not by evidence, but by a mix of politics, emotion, and mental instability known as Trump Derangement Syndrome. If the jurors are sufferers, they might want to convict Trump. But one reasonable jury could snap them out of it, by pointing out the flaws in the very people who are claiming the moral high ground on Trump.