RepublicanIn office since Nov 2024

Joe Sempolinski

New York State Assemblymember, District 148 since 2024. Ran in 2 elections between 2022 and 2024, winning 2. Re-elected in 2026. Next on the ballot in 2028.

New York State Assemblymember, District 148Born 1983

Official website Wikipedia Congress.gov FEC filings

In office: 1 yr; Since 2024
Bills became law: 0; 61 sponsored, 2025–2026 session
Votes missed: 0.0%; Chamber median 2.5%
With party: 93%; On votes splitting the parties
Last margin: +98.6; Won 2026
Next election: 2028; Nov 7, 2028

Source: Wikidata, congress-legislators and Open States; 99chambers legislative recordsUpdated Nov 7, 2026, 3:00 PM ET

Committees

As of 2026-10.

Education
Environmental Conservation
Higher Education
Labor
Mental Health
People with Disabilities

Source: congress-legislators committeesUpdated Nov 7, 2026, 3:00 PM ET

Legislation

2025–2026 session · 61 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 Sempolinski sits in the New York State Assembly

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

Closest: Matt Simpson, John Lemondes, Brian Manktelow

Source: 99chambers roll-call scalingUpdated Nov 6, 2026, 4:58 PM ET

With Sempolinski’s party

Votes with the chamber's Republicans93%
Cosponsorships of the other party's bills51%

Black tick: the average of Republicans in the New York State Assembly.

Source: 99chambers legislative scores from roll calls and cosponsorships

Key votes

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

Date	Bill	Sempolinski	Rep. majority	Dem. majority	Result
Jun 5, 2026	S 10643: Relates to labor peace agreements and the cannabis industry wage board; repealer	No	No	Yes	Passed 98–34
Jun 4, 2026	A 11561: Enacts into law necessary legislation including extensions and technical corrections	No	No	Yes	Passed 100–39
Jun 3, 2026	A 11349: Authorizes the town of Clarkstown to establish community preservation funds and to impose…	No	No	Yes	Passed 94–46
Jun 3, 2026	A 10391: Relates to adjudications and owner liability for a violation of traffic-control signal…	No	No	Yes	Passed 111–29
Mar 31, 2026	S 8812: Relates to the effectiveness of provisions of law relating to the provision of gas service…	No	No	Yes	Passed 83–61

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

Career

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

2022202320242025202620272028U.S. House, NY-23 New York State Assembly, District 148

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.

Year	Race	Result	Margin	Seat	+/−
2026	New York State Assembly, District 148	Won	R+98.6	R+37.9	+60.7
2024	New York State Assembly, District 148	Won	R+41.6	R+37.9	+3.7
2022	U.S. House, NY-23 (special)	Won	R+5.5	—	—