All voters must have a scannable government issued ID or drivers license.
Photo taken at the election precinct with the voting machine you are using.
Once your vote is cast you can be reassured that the vote is counted towards your candidate with transparent real time counting.
Once you have voted with your ID, you will no longer be allowed to cast a second vote.
In short, the elections would be as tight as TSA in any major airport using similar equipment nationwide as a requirement, removing the possibility of any fraud or double voting.