The Maine Supreme Court will hear arguments over the initiative that passed last year, setting up Ranked-Choice Voting. Opponents of RCV argue that the initiative violates the State Constitution. This web page of the Maine state court system has links to all the briefs. The Attorney General and the Secretary of State argue that the State Constitution must be changed before RCV can be implemented. The legislature would be free to put proposed amendments to the Constitution on the November 2017 ballot, if it wished to.
The case is OJ-17-1, In the Matter of Request for Opinion of the Justices. It is always possible the court will hear oral arguments and then decide that it doesn’t have jurisdiction to decide anything just now.
I pretty agree Attorney General and the Secretary of State’s idea of that they only need change the state constitution’s current ways of voting first before officially implemented, just prevented this again, But yet again Republicans senate will make pretty shady ways to keep destorying it eventually.