A new poll says independent Angus King has a comfortable but shrinking lead over Republican Charlie Summers in the race for the U.S. Senate. A poll commissioned by the Maine Sunday Telegram says King’s lead over Summers had dropped from 30 percentage points in June to 22 points in September. Fifty percent of those surveyed said they supported King, 28 percent favored Summers and 12 percent backed Democrat Cynthia Dill. The Critical Insights poll interviewed 618 randomly selected likely voters statewide. It was conducted Sept. 12 through Sept. 16 and has a margin of error of 4 percentage points. The poll also said 57 percent of those surveyed support a Nov. 6 ballot question seeking to legalize same-sex marriage in Maine, with 36 percent opposed and 7 percent undecided.