A new poll says Independent Angus King is on well on his way to winning the Senate seat in Tuesday’s election, while the lead in the Presidential race is narrowing.The survey by Critical Insights shows King leading Republican Charlie Summers by 16 points – 49 percent to 33 percent.Democrat Cynthia Dill has 11 percent support. In the Congressional race, both of the state’s incumbents hold the lead. In the second district, Representative Mike Michaud has 55 percent compared to Republican challenger Kevin Raye at 36 percent. In the first district, Representative Chellie Pingree leads Republican Jon Courtney, 56 to 37. On the gay marriage ballot question, supporters had a 13 percent lead over opponents, 55-42 percent. That was down from 21 percent in mid-September.And the poll suggests Republican presidential candidate Mitt Romney is cutting into President Barack Obama’s lead in Maine.It shows Obama leading Romney 49 percent to 42 percent – a 7 point difference. Obama had a 16 percentage-point lead in mid-September.The poll was conducted for the Maine Sunday Telegram and has a margin of error of 4 percentage points.