Well-written analysis of the Maine results and one of the best discussions of evaluating survey methodology we've seen in state-based media, by the Agree to Disagree blog at the Bangor Daily News:

According to a recent poll of 628 likely voters in Maine, done by the firm Clarity Campaigns and taken between June 22-24, the race for governor is literally neck and neck between Gov. Paul LePage and U.S. Rep. Mike Michaud, D-2nd District. It shows independent Eliot Cutler in third, about eight points behind, outside the margin of error... see more