RCV doesn’t really do that, though. It creates an illusion of 50% support, by eliminating candidates until one of them gets 50% of the remaining ballots, among the remaining candidates. Those italics are important. This is a meaningless “majority”.

It could mean that all the less-representative candidates were eliminated, and the winner got over 50% support of all those who voted.

But it could also mean that all the best candidates were eliminated by vote-splitting, exhausting 95% of the ballots in the process, and of the 5% of non-exhausted ballots left, 3% of the electorate preferred one bad candidate over the other awful one. Yes, this is a “60% majority” in the final round, but that doesn’t mean much. RCV is not much more democratic than FPTP.

There are much better voting methods that Maine could have adopted, it’s a pity they didn’t research the different options first.