One of the biggest problems here in the US at this point in time is polarization between the left and right. Part of the source of polarization is from the fact that realistically only Republican and Democratic(D&R) candidates ever stand a chance at being elected, leading to both parties choosing more and more extreme candidates. The reason for the D&R candidates having such a large advantage is primarily because of the First Past The Post(FPTP) election system which we are currently using. Ranked Choice Voting(RCV) solves this issue for the most part due to the way in which it works.

To quote fairvote.org, "Ranked choice voting (RCV) makes our elections better by allowing voters to rank candidates in order of preference. RCV is straightforward: Voters have the option to rank candidates in order of preference: first, second, third and so forth. If your first choice doesn’t have a chance to win, your ballot counts for your next choice. RCV works in all types of elections and supports more representative outcomes. RCV means better choices, better campaigns, and better representation."

For a more thorough written explanation, visit https://fairvote.org/our-reforms/ranked-choice-voting/

A video explaining how RCV works, along with it's pros and cons can be found here: https://www.youtube.com/watch?v=Y47yDXmeNmY

Of course, when implementing any new system, it is best to avoid confusing people(That goes double for elections!) Therefore, implementing the system in local elections first will allow people to try the new system out without causing issues at higher levels of government. RCV also has a sort of "Backwards Compatibility" with FPTP because if you only rank one candidate on the ballot, then it acts like a FPTP ballot, therefore reducing the impact of any confusion that may arise.

Of course, all electoral systems have their benefits and drawbacks, and RCV is no exception, but the benefits of RCV over FPTP outweigh the drawbacks by far for the situation in the US right now.