Ranked-choice voting is an election system in which voters don’t pick one candidate for each race, but rather rank all candidates in order of their preference. It’s also referred to as an instant runoff system, and is mostly designed to prevent candidates from winning with less than a majority of votes. While it’s been around for more than a century, and is used in some local and party elections here in the U.S., it’s mostly used in other countries. But, for the past two elections, Maine has