2004Final resultsIncumbent defeated
2004 election for Tennessee Senate District 18
Tennessee State Senate · Tennessee
Diane Black (R) won with 51.6% of the vote, defeating Jo Ann Graves (D) by 3.2 points.
Diane BlackRepublican · winner
51.6%42,496
Jo Ann GravesDemocrat · incumbent
48.4%39,894
82,390 votes
Source: Harvard Dataverse / Carl KlarnerUpdated Sep 30, 2026, 7:29 AM ET
The seat over time
D − R margin in this seat's races around 2004
Races before and after
Source: Harvard Dataverse / Carl KlarnerUpdated Sep 30, 2026, 7:29 AM ET