Any decision system is subject to manipulation... the more complicated the voting system is, the easier it is to "game". The results can be altered by running extra candidates, who either remain in the race or withdraw at a strategic time in order to allow a chosen candidate to win. Beware phantom candidates who don't seem to have a real purpose in running.
The following is extracted from a briefing at the U.S. Naval War College. This professor view such voting systems as methods to manipulate a result, not as a method of increasing participation!
The 3rd briefing, about page 23, explains the "Hare System"... which is the ranked choice variant Maine is using.
Page 36: The purpose of the voting method is to persuade others that their voice has been heard and that the result is “fair”, “reasonable”, “democratic”, ... add whatever feel-good terms you want.
A simulator which will show results for a variety of historical races, or any new ones (enter new data)
RCV gaming the vote.
Think it's fair? They PLAN to elect someone who is NOT the most popular.
Are you really going to be happy if the one polling THIRD ends up winning?