United States House of Representatives, Massachusetts District 5

Massachusetts's 5th congressional district
Massachusetts's 5th congressional district - since January 3, 2013.
Current Representative	Katherine Clark (D–Melrose)
Cook PVI	D+18

Massachusetts' 5th congressional district is a congressional district in eastern Massachusetts. The district is represented by Katherine Clark. Massachusetts congressional redistricting after the 2010 census has changed the borders of the district starting with the elections of 2012, with the new 3rd district largely taking the place of the old 5th. The 5th district had covered many of the communities represented in the old 7th district. As of 2010, the population of the 5th congressional district was 727,515. On July 15, 2013, Ed Markey resigned from the seat to become the junior Senator from Massachusetts. On December 10, 2013, Democrat Katherine Clark won a special election to fill the seat for the remainder of the 113th Congress. She was sworn into office on December 12, 2013.

The district has been in Democratic hands without interruption since 1975. Before Paul Tsongas' victory that year, it had only elected three Democrats in its entire existence and had been in Republican hands since 1895.

It was one of the more moderate districts in heavily Democratic Massachusetts before redistricting in 2013. In state races, it supported Republican candidates for Governor William Weld, Paul Celluci, and Mitt Romney. In the 2007 special election to replace Marty Meehan, Republican candidate Jim Ogonowski ran an unexpectedly strong race, ultimately losing 51-45%.

In Middlesex County:

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