It's kabuki theater voting.
An honest voting system for the electorate would allow a voter to cast either a positive vote or negative vote for one candidate for a given elected office. For each candidate, the negative vote total would be subtracted from the positive vote total, and the candidate with the most positive (or least negative) net total votes would win.
In this system the voter would get to avoid the moral dilemma of having to vote for an (albeit the least) repulsive candidate by now getting to cast a negative vote against the most repulsive candidate.
Sadly, politicians are not likely to approve such a voting system, since it would mean most of them would be elected by having the least negative votes.
You would end up with lessor known candidates winning. Trump would have very large positive and negative. Biden would be similar. It is not good to have people that are unknown suddenly end up in office.
I would go for a none of the above category. If that wins, the entire slate is dumped, declared ineligible for 4 years and a new election is held.