Maine became the first state in the country Tuesday to pass ranked choice voting

Amid a national vote that rocked the political world Tuesday, voters in Maine narrowly approved a measure that supporters say will be respectively disruptive to the state’s political status quo.

With 98 percent of the vote reporting in the state, 52 percent of voters approved a ballot question making Maine the first state to implement ranked choice voting, a fundamental reform of how voters literally fill out their ballot.

In a ranked choice vote system, rather than simply voting for one candidate, voters rank their candidates by preference—first, second, third, and so on.

https://www.boston.com/news/politics/2016/11/10/maine-became-the-first-state-in-the-country-to-pass-ranked-choice-voting