DemocratIn office since Nov 2022

Royce Duplessis

Louisiana State Senator, District 5 since 2022. Next on the ballot in 2027.

Louisiana State Senator, District 5

In office
3 yrs
Since 2022
Bills became law
6
47 sponsored, 2025–2026 session
Votes missed
13.7%
Chamber median 10.5%
With party
99%
On votes splitting the parties
Last margin
+6.4
Won 2022
Next election
2027
Nov 2, 2027

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

Committees

As of 2026-10.

  • Homeland Security
  • Judiciary B
  • Natural Resources
  • Senate and Governmental Affairs

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

Legislation

2025–2026 session · 47 sponsored · 6 became law
BillIntroCmteSenateHouseLaw
SB 268 LOCAL FINANCE: Provides for lead service line replacement. (8/1/26)
Became law Jun 2026
SB 449 PUBLIC CONTRACTS: Provides for the procurement of materials and goods. (8/1/26)
Became law Jun 2026
SB 228 LOCAL FINANCE: Constitutional amendment to allow for the use of public funds to replace drinking water…
Became law Jun 2026
SB 286 SPECIAL DISTRICTS: Provides relative to the New Orleans Downtown Development District. (gov sig)
Became law Jun 2026
SB 322 WORKFORCE DEVELOPMENT: Provides relative to apprentices. (8/1/26)
Became law May 2026

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

Voting record

2025–2026 session · placement by roll-call votes

Where Duplessis sits in the Louisiana State Senate

Duplessis is closer to the center than 0% of the chamber's Democrats.

Dem. medianRep. medianDuplessisMore liberalMore conservative

Closest: Gary Carter, Sidney Barthelemy, Gerald Boudreaux

Source: 99chambers roll-call scalingUpdated Nov 6, 2026, 4:51 PM ET

With Duplessis’s party

  • Votes with the chamber's Democrats99%
  • Cosponsorships of the other party's bills65%

Black tick: the average of Democrats in the Louisiana State Senate.

Source: 99chambers legislative scores from roll calls and cosponsorships

Key votes

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

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

Career

Offices held, and every time Duplessis 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
2022Louisiana State Senate, District 5WonD+6.4
2019Louisiana House of Representatives, District 93Won—

Source: 99chambers results archive

Seats Duplessis has held

Source: 99chambers results archive

Who Duplessis has run against

  • Mandie Landry (D) · 2022 general, won

Source: 99chambers results archive

How we know Duplessis

One person, matched across every source we use.

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