Janet Mills and Jared Golden both won pluralities and went on to win their party's nomination by RCV.
There were 131,330 Dem ballots for governor.
Mills had 62,959 in the 4th round win. That's 48% of starting ballots.
So RCV did not give us a majority preference on the D side, contrary to the sales pitch by RCV advocates.
Numbers from wikipedia
In short, the result could have been known on election night, without the extra days of effort on the part of everyone involved with the ballot gathering and tabulating.
Are we calling this a positive test of statewide RCV?