Incumbent Blackburn has focused on border security and supporting Trump while Johnson has tried to energize Democrats in a new way.

Johnson, who rose to national fame by being a member of the "Tennessee Three" and was almost ousted from the Tennessee General Assembly, won Shelby County with 58% of the vote. Blackburn lost the county with only 38% of the vote, according to figures from the Shelby County Election Commission.

Blackburn has been projected to keep her seat against Johnson by the Associated Press and NBC in the Nov. 5 election.

Brentwood, will serve a second term representing Tennessee in the U.S. Senate, after The Associated Press called the race Thursday night.

Tennessee voters are deciding whether to reelect Republican U.S. Sen. Marsha Blackburn to a second term or choose Democratic state Rep. Gloria Johnson.

U.S. Sen. Marsha Blackburn rolled to her second term on Tuesday, defeating state House Rep. Gloria Johnson by a double-digit margin.

Incumbent Blackburn has focused on border security and supporting Trump while Johnson has tried to energize Democrats in a new way.

Gloria Johnson served in the Tennessee House of Representatives, not the U.S. House of Representatives. Election Day is on Tuesday, Nov. 5. Beyond the presidential race, this year's ballot includes several important local elections and key state races.