Freshman Rep. Carol Shea-Porter (D) defeated incumbent Frank Guinta (R) for the seat in 2012 by only 3.8 percentage points. However, Shea-Porter faced a district that grew its conservative base. Although President Barack Obama won the district in both 2008 and 2012, in 2012 the victory was much smaller. Obama won by only 1.6 percentage points in 2012, compared to 6.4 points in 2008. A rematch between Shea-Porter and Guinta made for a competitive battle in 2014, which resulted in Guinta recapturing the seat.