Someone getting shot at isn't going to make anybody that wasn't already voting for Trump decide to register and vote for him, lol, if anything, when the people that think that sort of thing should move the needle find out it doesn't, they will just become more obnoxious, and angry, and it will actually turn people off to him. I could however see all these celebrities and centrist dems calling for Biden to step down actually piss his base off, and have the affect on some voters that were kind of "ehhhh" that republic*nts were hoping that the Trump thing would have on "undecideds".