Pretty well actually, considering the glacial pace inherent to changing a political landscape. It's made it onto the ballot in several states, and is used several local and state-wide elections here and there. The Fair Representation Act has been brought to th the floor in 2017, 2019, 2021, and again this year but it hasn't been voted on yet.
How about if everyone just voted for the candidate that supports ranked choice?
How's that going for ya? Elected a third party candidate to the presidency yet?