In the closely contested Maine Democratic gubernatorial primary set for June 9 under ranked-choice voting, trader consensus favors former DHHS Director Nirav Shah at 40% implied probability, reflecting recent polls like Schoen Cooperman (late April-early May) showing him atop first-round ballots at 28-35% and winning final-round simulations, bolstered by his health care expertise amid ongoing debates on post-pandemic recovery and access. Former Senate President Troy Jackson follows at 32%, sustained by labor union endorsements—including state employees—and strength in northern Maine working-class precincts, where undecided voters (around 25% in surveys) could consolidate via RCV preferences. Recent candidate forums and one-on-one interviews have exposed policy divides on economy and housing without clear separation; major party endorsements, turnout in key caucus regions, or gaffes in final weeks could tip the balance toward a frontrunner.