That last sentence isn't that surprising, and intellectually consistent. For the sake of discussion, let's call the commissioner Mr. Schlongabouttown. He says he can't vote for Mr. Schlongabouttown because he cheated on his wife. He can still vote for Trump becaue he never cheated on Mr. Schlongabouttown's wife. It's probably the same reaction you'd get if you pointed out that the Bush administration deleted up to 22 million emails from a private server they were using that were also related to Congressional investigations, they'll point out Bush didn't delete any of Clinton's emails.
But Trump also cheated on his first wife. I don't understand his logic of disqualifying one person but voting for another that have the same issue. People don't take time to research who they are voting for. That goes back to my argument that there should be some basic qualification in order to get your voters registration.