Unfortunately, there is a propensity among many folks to go with their gut rather than heeding the results of a cool-headed intellectual appraisal. Further, that approach seems to be more common among so-called swing voters, i.e. those that could possibly be convinced by arguments.
In other words, he cannot "do so". The question we need to ask is whether that's relevant in any meaningful way.
“We learn from history that we do not learn from history”
― Georg Wilhelm Friedrich Hegel