The 2010 United States House of Representatives elections, also known as the 2010 midterm elections, were held on November 2, 2010, at the midpoint of President Barack Obama's first term in office. Voters of the 50 U.S. states chose 435 U.S. Representatives. Voters of the U.S. territories, commonwealths, and the District of Columbia chose their non-voting delegates. 
Republicans regained control of the chamber they had lost in the 2006 midterm elections, picking up a net total of 63 seats and erasing the gains Democrats made in 2006 and 2008. Although the sitting U.S. President's party usually loses seats in a midterm election, the 2010 election resulted in the highest loss of a party in a House midterm election since 1938.
 The Republican Party gained control of the most House seats since 1946.  Republicans gained the most in New York state where they picked up six seats, defeating five incumbents and winning an open Democratic district. The heavy Democratic Party losses were attributed to anger with President Obama, strong opposition to the new health insurance bill that was commonly called "Obamacare", and the weak economy (unemployment averaged 9.6% for the year.