City elections can be held by the city or they an contract with the county to hold them. Looks like this city held their own which allowed the Mayor and his wife to "cheat". For them to do this, shows their inner character is black. They will cheat or steal, matters not to them.
Texas will hold people responsible for election fraud. I have posted before that when Gov. Greg Abbott was our Attorney General (he is Governor now), he went after a woman who violated election law. I thought he should have treated her kindly rather than taking her to court like a criminal. She did not know she had violated the law. This woman was taking care of her Mom and she had written in for a absentee ballot. The ballot came but the mother died before she could fill it out. Her child, this woman who cared for her, knew how her mother was going to vote so she filled in the ballot and sent it in.
I have said before, just because a person fills out an absentee ballot or a provisional ballot, does not mean it will be counted. In the checking process by the Early Voting Ballot Board, they found the woman had died before the date of the ballot, so they rejected the ballot. Abbott went after this woman, took her to court and she paid a fine and I don't remember what else he charged her with. I need to look that up. It was on my old computer, maybe it got on my new one. I do remember it was in south Texas. I thought the woman was carrying out her mother's wishes, didn't know election law, and did it for her mother; but the law is the law.