What can be done to stop this sort of election fraud?

Last month, Bridgeport CT had a Democratic primary. The incumbent mayor won the election by 251 votes. However the challenger brought a lawsuit challenging the election results, claiming voter fraud, specifically issues with the mail in ballots. He brought video evidence of several City Council members as well as courthouse workers dropping dozens and dozens of ballots into drop boxes, over and over again. These people were not registered as someone that is allowed to do this, as is required by state law. Several of these people actually campaigned for the incumbent mayor and one of them was on the ballot as well.

The judge in the case threw out the election results and ordered another primary to be held. However this brings up the problem. The primary was last month, the court case took time to complete and the ruling was yesterday. The general election is today and the judge cannot postpone that. So the water is getting even more muddied.

So the question becomes what can be done to stop this sort of thing…cheating and then forcing the victim of the cheat to go to the courts to get satisfaction? What should happen to those that participated? Obviously since the primary was tainted, that puts the general election at risk as well. And even if it is a clean election, the incumbent mayor should potentially not have been allowed onto the ballot.