At the November 2, 2010 election, Green Party nominees for the State House outpolled their Republican opponents in four districts. The best Green showing was in Brunswick, in the 66th district. See this pre-election story, which has an interview with all three candidates. The results were: Democratic 38.62%; Green 33.33%; Republican 28.05%. The Green nominee was K. Frederick Horch.
The other districts in which Greens outpolled Republicans were the 115th, 118th, and 120th districts, all in Portland.