Mary Marsha Blackburn is an American politician and businesswoman serving as the senior United States senator from Tennessee. Blackburn was first elected to the Senate in 2018. A member of the Republican Party, Blackburn was a state senator from 1999 to 2003 and represented Tennessee's 7th congressional district in the United States House of Representatives from 2003 to 2019, during which time the National Journal rated her among the House's most conservative members.

The 7th congressional district of Tennessee is a congressional district located in parts of Middle and West Tennessee. It has been represented by Republican Mark E. Green since January 2019. The seventh district has significant suburban and rural areas. Although most of the area is rural, more than half of the district's vote is cast in either Montgomery County (Clarksville) or Williamson County.