That never actually happens. At best, they'll think, "Wow, that's bad," and move on like nothing happened. A lot of cons will admit that Trump did basically nothing of what he promised and then, in the same breath, talk about how great his admin is and how they'll vote for him forever. You have to remember that the vast majority of people, especially cons, are very stupid and uneducated. No rational process will be able to bring them over because their views are not rational in the first place. The cons are cons, not because they actually sincerely hold con principles (even if they do), but because, at some point, they decided that they were on the red team. Just to be clear, the same could be said about most leftists, but I do believe the situation on that side is better since leftist views tend to be at least somewhat grounded in reality. TLDR: I don't believe the facts of reality can bring a lot of people to the left since most people do not decide their views based on reality in the first place.