Show of hands:
Do you STILL believe the Founders were right in leaving election parameters entirely to the states?
This is one of the greatest failures of the Constitution. It was brought about by the belief of The Founders that the governments of the states would believe "congruently" when deciding state and local matters (such as elections).
What do you think the Founders would have said if you proposed ranked-choice voting to them?
That's why a new Constitutional "Election Amendment" is needed.
To FORCE all states to comply with a defined set of parameters, and at the same time to outlaw manipulations designed to subvert the voting process, such as ranked-choice voting and the acceptance of absentee ballots long after Election Day is over.
In the meantime, the red (and perhaps purple) states should endeavour to adopt a common set of rules regarding elections. In the same way that there is a "Uniform Commercial Code", so should there be uniform rules for all elections in America.