On April 6, Maine People’s Resource Center released the results of a poll for various Maine election races. In the U.S. Senate race, the poll assumed that the Republicans will nominate Charlie Summers, and that Democrats will nominate Matt Dunlap (the primary is in June). The results: Angus King, independent, 56.0%; Republican Charlie Summers 21.8%; Democrat Matt Dunlap 12.2%; other and undecided 9.9%. See the entire poll here. The U.S. Senate results are on page eleven.
No one other than the Republican and Democratic nominees for U.S. Senate in Maine has ever polled as much as 10% of the popular vote in the past. The United States has been electing U.S. Senators by popular vote starting in 1914.