In this election, Maine voters will become the first in any state to cast their ballots for president of the US using a system known as ranked-choice voting (RCV). Mainers will also use RCV in other federal races including the US Senate and Congress. Under this system, rather than make a single mark on your ballot for the one candidate you choose, voters instead can rank each candidate in order of their preference. With RCV, when no candidate receives at least 50% of the vote, another round of vote counting is done after removing the candidate who received the lowest…