RepublicanIn office since Nov 2018

Dave Wilson

Delaware State Senator, District 18 since 2018. Next on the ballot in 2028.

Delaware State Senator, District 18

In office
7 yrs
Since 2018
Bills became law
9
18 sponsored, 2025–2026 session
Votes missed
2.9%
Chamber median 3.1%
With party
99%
On votes splitting the parties
Last margin
+39.9
Won 2022
Next election
2028
Nov 7, 2028

Source: Wikidata, congress-legislators and Open States; 99chambers legislative recordsUpdated Oct 27, 2026, 9:43 AM ET

Committees

As of 2026-10.

  • Agriculture
  • Capital Improvement
  • Capital Improvement
  • Health and Social Services
  • Veterans Affairs

Source: Open States committeesUpdated Oct 27, 2026, 9:43 AM ET

Legislation

2025–2026 session · 18 sponsored · 9 became law
BillIntroCmteSenateHouseLaw
HB 371 AN ACT TO AMEND TITLE 3 OF THE DELAWARE CODE RELATING TO THE DELAWARE AGRICULTURAL LANDS PRESERVATION ACT.
Became law Sep 2026
SB 232 AN ACT TO AMEND TITLE 11 OF THE DELAWARE CODE RELATING TO CRIMINAL MISCHIEF.
Became law Sep 2026
HB 278 AN ACT TO AMEND TITLE 7 OF THE DELAWARE CODE RELATING TO REGULATIONS AND PROHIBITIONS CONCERNING GAME AND…
Became law Jun 2026
SB 28 AN ACT TO AMEND TITLE 18 OF THE DELAWARE CODE RELATING TO FUNERAL EXPENSES FOR CERTAIN VOLUNTEERS WITH FIRE…
Became law Sep 2025
HB 87 AN ACT TO AMEND TITLE 16 OF THE DELAWARE CODE RELATING TO THE SUICIDE PREVENTION COALITION.
Became law Aug 2025

Source: Open States billsUpdated Nov 6, 2026, 4:22 PM ET

Voting record

2025–2026 session · placement by roll-call votes

Where Wilson sits in the Delaware State Senate

Wilson is closer to the center than 17% of the chamber's Republicans.

Dem. medianRep. medianWilsonMore liberalMore conservative

Closest: Dave Lawson, Bryant Richardson, Brian Pettyjohn

Source: 99chambers roll-call scalingUpdated Nov 6, 2026, 4:48 PM ET

With Wilson’s party

  • Votes with the chamber's Republicans99%
  • Cosponsorships of the other party's bills78%

Black tick: the average of Republicans in the Delaware State Senate.

Source: 99chambers legislative scores from roll calls and cosponsorships

Key votes

Votes chosen for their effect, not their side: Wilson’s vote, each party’s majority, and the result. An orange vote differs from most Republicans.

Source: 99chambers key votes from Congress.gov, Voteview and Open States roll calls

Career

Offices held, and every time Wilson was on a ballot. Filled marks are general elections won; hollow marks are primaries; an orange outline is a loss.

Source: 99chambers results archive (MEDSL, Klarner, state election offices)

Elections

Margin against the seat’s presidential baseline: how the seat voted for president in the same or nearest year.

YearRaceResultMargin
2024Delaware State Senate, District 18Won—
2022Delaware State Senate, District 18WonR+39.9
2018Delaware State Senate, District 18WonR+30.3
2016Delaware House of Representatives, District 35WonR+45.8
2014Delaware House of Representatives, District 35Won—
2012Delaware House of Representatives, District 35WonR+85.2
2010Delaware House of Representatives, District 35WonR+40.6
2008Delaware House of Representatives, District 35WonR+22.0

Source: 99chambers results archive

Seats Wilson has held

Source: 99chambers results archive

Who Wilson has run against

  • Billy Devary (D) · 2022 general, won
  • James A. Purcell (D) · 2018 general, won
  • Gary M. Wolfe (D) · 2016 general, won
  • Ronnie L. Fitzgerald Jr. (L) · 2012 general, won
  • James J. Westhoff (D) · 2010 general, won
  • L. Aaron Chaffinch (D) · 2008 general, won

Source: 99chambers results archive

How we know Wilson

One person, matched across every source we use.

Source: Identity links: Wikidata, congress-legislators, Open States, FECUpdated Oct 27, 2026, 9:43 AM ET