“The legislature of a state can pick the electors, the election can be redone with safeguards in place. Certain precincts can be excluded from the total vote count.”
Only the first can be done. There are no “re-do” clauses in the Constitution and you can’t change the laws after the fact (ex post facto). The exclusion of certain precincts would violate the equal protection clause. Each state is an all or nothing. Likely the legislatures will need to step in, which is not unprecedented. I can see arguments even there, resulting in some states losing their EVs entirely.
We need a major overhaul; national voter ID for federal elections to prevent fraud (which states are welcome to use for state elections :) ), severe penalties for deliberate voter fraud, no absentee or mail-in - you vote where you live and nowhere else, but early voting should be okay with national ID.
Given that we do, literally, billions of secure transactions every day with no significant fraud (and this is MONEY we are talking about) related to the transaction mechanisms, we ought to be able to do a couple hundred million secure votes every couple of years. There is no excuse for this mess, and no other explanation than that it is deliberately flawed so it can be abused.
Anybody that opposes secure elections is compromised.
Well, if there is no prohibition, and since there is no "national election" doesn't that reserve the right back to the states?