Looking in from the outside, I have to say that your voting system seems a convoluted, disjointed mess.

Here in the U.K., we have two ways to vote - we either go to a polling station on polling day and vote in person using the voting slip handed to us by the supervisor(s), or we elect to have a postal vote whereby we receive a voting slip and two envelopes, which we put in any post-box in time to arrive with the polling authority by the closing date.

Very simple, very effective.