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Asm. Joseph Sempolinski

District 148 Republican First elected 2025

Joseph Sempolinski represents AD-148, a deeply Republican district carrying an R+25 partisan lean, where he won his first Assembly election in 2024 with a 38.7-point margin over Daniel J. Brown (65.9% to 27.2%); his 2026 vulnerability model rates the seat Safe R across all electoral scenarios. The district is anchored by a voter registration breakdown of 47.1% Republican to 22.3% Democrat, with a predominantly white (90.7%) and homeowning (76.9%) population of 130,604, a median household income of $61,087, and a poverty rate of 17.6%, reflecting a rural or small-city character in western New York. Sempolinski sponsored 59 bills in his first session, with primary focus areas spanning Penal law (5 bills), Environmental Conservation (4 bills), Tax (4 bills), Criminal Procedure (3 bills), Family Court Act (3 bills), Social Services (3 bills), and Cattaraugus County-specific legislation (3 bills). No committee chairmanship is indicated in available data, and no lobbying sector information was provided in this brief.AI

Topic Focus AI

Election Law & Voter Registration Business Regulation & Deregulation Constitutional Constraints on Legislation Judicial Independence & Politicalization Property Rights & Homeowner Autonomy State Budget Priorities & Tax Credits Workers' Compensation Law Child Care & Infant Safety Standards Election Security & Implementation Timeline Gaming Compact & Seneca Nation Relations Healthcare Regulation & Rural Impact Municipal Fiscal Responsibility

Topics extracted by AI from joint Senate-Assembly committee hearing transcripts and floor debate. Tag size reflects number of supporting citations.

Key Issues AI

Real Property 1 against A10102
Penal 5 bills
Environmental Conservation 4 bills
Tax 4 bills
Cattaraugus County 3 bills
Criminal Procedure 3 bills
Family Court Act 3 bills
Social Services 3 bills
Civil Service 2 bills

Key issue areas derived from floor debate speeches and sponsored bill law sections.

Legislative Activity (2025–2026)

Bills sponsored 59
Floor debate appearances 28
Years in office 1

Bill sponsorship from NYS Open Legislation API. Hearing appearances from joint Senate-Assembly committee transcripts. Floor debate from official Assembly session transcripts (Granicus, 2023–present).

Bill Focus Areas

Penal 5 bills
Environmental Conservation 4 bills
Tax 4 bills
Cattaraugus County 3 bills
Criminal Procedure 3 bills
Family Court Act 3 bills
Social Services 3 bills
Civil Service 2 bills

Grouped by law section from sponsored Assembly bills. Source: NYS Open Legislation API.

Floor Speeches: In Support (6) AI

A08022-A An act to amend the Criminal Procedure Law, in relation to requiring certain covered platforms to provide a process for law enforcement agencies to contact such platform and to comply with search warrants within 72 hours 2026-02-09 PASSED
A09466 An act to amend the Workers' Compensation Law, in relation to extending Paid Family Leave benefits to certain construction workers 2026-01-21 PASSED

Explained he had voted against the original bill but was pleased the chapter amendment addressed concerns raised in prior debate, prompting his affirmative vote on the revised version.

A06757 Peer-to-peer vehicle rental insurance requirements 2025-06-16 PASSED

Voted in favor because lowering regulations makes it easier to do business in New York State.

A07340 An act to amend Chapter 469 of the Laws of 2024, amending the Tax Law relating to authorizing the City of Olean to impose a hotel and motel tax, in relation to the effectiveness thereof 2025-06-13
A03649-B An act to amend the Election Law and the Vehicle and Traffic Law, in relation to joining multistate voter list maintenance organizations 2025-06-06 PASSED

Noted that voter rolls need maintenance and that constituents have concerns about election confidence. Expressed support given adequate protections for privacy, bipartisanship, and ensuring eligible voters remain registered while ineligible voters are identified.

Floor Speeches: In Opposition (22) AI

A10102 An act to amend the Real Property Law, in relation to enacting the 'Low Impact Landscaping Rights Act' 2026-03-30 PASSED

While skeptical of HOAs generally, expressed concern about existing contracts and potential constitutional issues under the Contracts Clause, voting against the bill on constitutional grounds.

A04849 Microplastics in washing machines - filter requirement 2026-03-18 PASSED

Argued that New York's attitude of doing things differently than other states puts additional regulations on businesses, makes things less affordable, and drives people and businesses to other states.

A09433 An act to amend the General Municipal Law in relation to electronic bell jar games 2026-01-29 PASSED

Expressed concern about discretionary determination of Gaming Compact violations and potential leverage against Seneca Nation during Compact negotiations, but voted yes to advance the bill's positive goals.

A09445 Prohibiting the use of infant walkers in child care facilities 2026-01-20 PASSED

Opposed the bill despite acknowledging its admirable goal, arguing it lacks a carve-out for special needs children who may benefit from infant walkers for physical therapy and mobility development.

A03351 Party voter registration challenge procedures for parties without county committees 2025-06-17 PASSED

Opposed the bill as odious to a free society, arguing rural voters should not face party inquisitions for thinking differently than state-level party leadership.

Electoral History

General Elections

Year Winner Runner-up Margin
2024 Joseph Sempolinski 65.9% (38,536) Daniel J. Brown 27.2% (15,893) 38.7pts
2022 Joseph M. Giglio 100.0% (36,065) Uncontested
2020 Joseph M. Giglio 74.1% (39,964) W. Ross Scott 25.9% (14,004) 48.2pts
2018 Joseph M. Giglio 100.0% (33,574) Uncontested
2016 Joseph M. Giglio 100.0% (40,721) Uncontested
2014 Joseph M. Giglio 100.0% (27,134) Uncontested
2012 Joseph M. Giglio 64.9% (28,873) Daniel J. Brown 35.1% (15,636) 29.8pts
2011 Raymond W. Walter 49.1% (17,254) Craig R. Bucki 45.8% (16,102) 3.3pts
2010 James P. Hayes 67.8% (29,264) Gregory M. Vinal 32.2% (13,886) 35.6pts
2008 James P. Hayes 60.3% (33,787) Jerome D. Schad 36.9% (20,680) 23.4pts
2006 James P. Hayes 62.8% (28,351) Susan J. Grelick 33.9% (15,287) 28.9pts
2004 James P. Hayes 100.0% (37,791) Uncontested
2002 James P. Hayes 58.2% (23,847) Daniel J. Ward 41.8% (17,135) 16.4pts
2000 Sandra Lee Wirth 61.3% (35,660) Richard A. Fontana 38.7% (22,512) 22.6pts
1998 Sandra Lee Wirth 66.6% (29,616) Robert M. Kucewicz 33.4% (14,871) 33.2pts
1996 Sandra Lee Wirth 61.0% (32,918) Richard T. Quinn 39.0% (21,027) 22.0pts

Primary Elections

Year Winner Runner-up Margin
2008 (Independence) James P. Hayes 64.3% (160) Janet M. Vullo 35.7% (89) 28.6pts
2002 (Working Families) James P. Hayes 100.0% (12) Opportunity To Ballot 0.0% (0)

Source: NYS Board of Elections certified results. ⚡ = margin under 10 pts. District history reflects 2022 redistricted boundaries.

Vulnerability Index

Base lean: R+35

Favorable D
Safe R
Neutral
Safe R
Favorable R
Safe R

Scenario model: ±5pt national environment shift applied to district base lean (R+35). Base lean blends voter registration (40%) with recent contested general election margins (60%), using up to the last 4 general elections with margins under 40 points. Ratings: Safe D/R = 15+ pts, Likely = 8–14 pts, Lean = 3–7 pts, Toss-up = within 2 pts (Assembly districts are smaller and more homogeneous than Senate districts, so tighter thresholds are used). Generic ballot from Silver Bulletin (Nate Silver), as of 5/21/2026. Not a prediction — reflects structural competitiveness under different cycle environments.

District 148 Profile

Population 130,604
Median income $61,087
Median rent $770
Homeownership 76.9%
Education (BA+) 22.3%
Poverty rate 17.6%
Uninsured rate 5.9%
Unemployment rate 5.8%

Source: U.S. Census Bureau, American Community Survey 5-Year Estimates (2024).

Voter Registration

22%
47%
31%
Dem 22.3% Rep 47.1% Ind/Other 30.7%

Demographics

White 90.7%
Black 1.5%
Hispanic 2.2%
Asian 1.2%
Median age 41.3
Foreign born 1.8%
Limited English households 0.4%
Veterans 8.1%
Disability rate 16.7%

Commute Mode

Drive alone 75.3%
Public transit 0.4%

Source: U.S. Census Bureau, ACS 5-Year Estimates (2024). Race and ethnicity figures may not sum to 100% — Hispanic/Latino is an ethnicity category that overlaps with racial groups.

Lobbying Activity

No lobbying disclosures on record for this member in the available dataset.

Source: NY Commission on Ethics and Lobbying in Government via data.ny.gov.