Here's a good read on it: https://www.heritage.org/election-integrity/report/ranked-choice-voting-bad-choice

You can google more if you want a more rounded understanding of it. But I'm hoping that someone out there is more mathematically inclined than I am, because with ranked choice you do not need a majority of votes to win. This could potentially get white nationalists in power. When confronted with multiple candidates in a voting booth, people just have a tendency to vote for as many as they possibly can, even if they're voting for people they don't know or don't even want. I've literally seen elections where Democrats voted Republican, simply because the option was on the ballot because you could vote for multiple candidates for the same position.

Let's say that hypothetically the 2020 presidential race was Trump, Warren, Sanders, Gary Johnson, and David Duke. You can bet millions of people would vote David Duke, just because he was on the ballot, but not because they wanted him, after all they did rank him last.

Initially, I was against it. Because it would hurt conservative candidates, but then I don't need to explain to anyone here why voting conservative is a complete waste of 15 minutes, until I realized that by targeting specific areas a WN candidate could theoretically win in the run off. You'd need to do some serious number crunching, and I wish there were more activist minded people in this "movement" instead of 4chan trolls, but going through something like ballotpedia.com and running hypothetical numbers you could see better which areas hold promise.