2013 Massachusetts's 5th congressional district special election
A special election for Massachusetts's 5th congressional district took place on December 10, 2013, due to the resignation of Democratic Congressman Ed Markey following his election to the United States Senate in a special election on June 25, 2013.[1] Primary elections were held on October 15, in which Democratic state senator Katherine Clark and Republican Frank Addivinola won their party nominations. State law required that Governor Deval Patrick call a special election between 145 and 160 days after the vacancy became official.[2] On December 10, Clark easily defeated Addivinola with almost 2/3 of the vote, holding the seat for the Democrats.[3] Clark's win marked the 92nd consecutive U.S. House loss by Republicans in Massachusetts since 1996.[4]