Asm. Joseph Sempolinski
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
Topics extracted by AI from joint Senate-Assembly committee hearing transcripts and floor debate. Tag size reflects number of supporting citations.
Key Issues AI
Key issue areas derived from floor debate speeches and sponsored bill law sections.
Legislative Activity (2025–2026)
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 2025–2026
Grouped by law section from sponsored Assembly bills. Source: NYS Open Legislation API.
Floor Speeches: In Support (6) AI
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.
Voted in favor because lowering regulations makes it easier to do business in New York State.
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
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.
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.
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.
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.
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 AD-148
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 AD-148
Base lean: R+35
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
Source: U.S. Census Bureau, American Community Survey 5-Year Estimates (2024).
Voter Registration
Demographics
Commute Mode
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.