Incumbent Democratic Congresswoman Chellie Pingree ran for re-election to a second term from this liberal district based around metro Portland and the southern coastal region of Maine. Pingree was initially thought to be a shoo-in for re-election against Republican businessman Dean Scontras, but Scontras benefited from some negative publicity over her use of a private jet, despite ironically criticisizing politicians for using them two years earlier. Polling indicated that the race would be tight, but in the end, Pingree was re-elected by a solid margin of victory. Interestingly, she was one of eight Democrats in the House of Representatives to win election in 2010 by a larger margin than in 2008.
Incumbent Democratic Congressman Mike Michaud, who was first elected in 2002, considered running for Governor this year, but ultimately decided to run for a fifth term in Congress. Running for re-election in this liberal-leaning district, which constitutes nearly 80% of the state of Maine, Congressman Michaud faced Republican businessman Jason Levesque. The candidates squared off in a debate on October 19 that saw many personal attacks and sharp disagreement over matters of policy. In particular, Levesque made an issue over the fact that Michaud received $12,000 in campaign contributions from embattled Congressman Charlie Rangel and had not returned the money. Polls indicated a slight advantage for Michaud in a contentious race, and on election day, Michaud won re-election by a healthy ten-point margin of victory.