Diana Harshbarger

Republican. Trump won Tennessee in 2024. Not flagged for 2032 redistricting risk.

Age on Election Day 2028: 68; Born January 1, 1960.
Lean: R+29; Solidly Republican. Cook PVI, 2026 lines.
In the House since: 2021; Served since January 3, 2021.
Cash on hand: $1.90M; $1,898,700. Reporting period ended October 14, 2026

The 2026 race

November 3, 2026: Re-elected

Over Kristi Burke (D). Called by NBC News on November 4, 2026.

Primary: Unopposed

The only name on the ballot, Aug. 6.

Also on the November ballot: Joshua Ray Ashburn (independent), Richard G. Baker (independent), Chris Campbell (independent), Billy Cody (independent), Tyler Brice Mitchell McClain (independent).

Endorsements, 2026

Endorsed: Donald Trump.

None on record: Club for Growth, Turning Point Action, MAHA PAC.

What a race here costs

TV: Tri-Cities, 332,000 homes. The district is 64.8% of the market; 2 markets in all.

2026 primary: $626K spent, $8.34 a vote

2024 general: $230K spent, $0.70 a vote

In the House, 119th Congress

Vice Chair of the Energy and Commerce subcommittee on Health

Committees: Energy and Commerce

General-election outcomes

2024 vote share: 78.08%
Victory margin: +58.69 pts
Trump, 2024: 78.41% · +57.84 pts

Margin 0.85 points above Trump. Vote share 0.33 points below.

2024 election districts. Valid votes; margin over the runner-up. Runner-up: Kevin Jenkins. Returns · Trump baseline · Method. Reviewed November 5, 2026.

Money, past cycles

Money raised, the share from individual donors, and cash on hand, by past cycle
Cycle	Raised	From individuals	Cash at year end
2020	$2.1M	17%	$258K
2022	$2.0M	66%	$935K
2024	$1.9M	46%	$1.5M

Scorecards and grades

Heritage Action (lifetime) (opens in a new tab): 100
Club for Growth (lifetime) (opens in a new tab): 95
Turning Point Action (lifetime) (opens in a new tab): 88
GOP Platform (2025) (opens in a new tab): 95
Conservative average, out of 100: 94.5
Progressive average, out of 100: 7.2 (LCV 0, Progressive Punch 2, Stop Corruption Now 20)
IAP Action score, immigration: 154, rank 30 of 431
Gun Owners of America grade, 2024: A

Read October 4, 2026 from the member’s page on heritageaction.com, clubforgrowth.org, tpaction.com, gopscorecard.limitedgov.org.