DemocratIn office since Mar 2026

Sidney Barthelemy

Louisiana State Senator, District 3 since 2026. Next on the ballot in 2027.

Louisiana State Senator, District 3

In office
<1 yr
Since 2026
Bills became law
0
5 sponsored, 2025–2026 session
Votes missed
15.0%
Chamber median 10.5%
With party
97%
On votes splitting the parties
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.

  • Commerce, Consumer Protection and International Affairs
  • Education
  • Judiciary B
  • Legislative Capital Outlay
  • Retirement

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

Legislation

2025–2026 session · 5 sponsored · 0 became law

No bills in this list for the 2025–2026 session.

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

Voting record

2025–2026 session · placement by roll-call votes

Where Barthelemy sits in the Louisiana State Senate

Barthelemy is closer to the center than 17% of the chamber's Democrats.

Dem. medianRep. medianBarthelemyMore liberalMore conservative

Closest: Gerald Boudreaux, Gary Carter, Jimmy Harris

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

With Barthelemy’s party

  • Votes with the chamber's Democrats97%
  • Cosponsorships of the other party's bills54%

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: Barthelemy’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 Barthelemy 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
2026Louisiana State Senate, District 3 (runoff)Won+27.6

Source: 99chambers results archive

Seats Barthelemy has held

Source: 99chambers results archive

How we know Barthelemy

One person, matched across every source we use.

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