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 floor debate speeches, joint committee hearing transcripts, and sponsored legislation. 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 (16) AI
Emphasized strong bipartisan support across the Steuben County delegation and urged the Governor to sign the bill rather than veto it again as occurred previously.
Praised the bill as a good example of the legislative process working properly, noting it resulted from committee hearings and listening to impacted individuals and families. Said the transparency and clarity on placements addresses a key question about housing availability.
The bill serves a legitimate purpose by allowing extended family members currently denied access under existing statute to obtain information about relatives' mental health history for personal medical or genealogical reasons.
Floor Speeches: In Opposition (26) AI
Criticized the timing and process, noting the bill was dropped at the end of session both years despite having a full year between sessions to conduct proper procedures, and questioned why public hearings and Judiciary Committee review were not pursued.
The current process works and is longstanding. Transferring authority from the statutorily bipartisan Board of Elections to a supermajoritarian Legislature injects partisanship into a process that should remain neutral. The Legislature is inherently biased in favor of amendments it votes to place on the ballot.
Argued the bill penalizes business growth by fining companies $2,500 per platform for leaving ads up slightly too long, potentially costing $25,000+ for a business hiring its 101st employee. Called it anti-business legislation.
Argued the bill penalizes business growth by imposing potential $25,000 fines on a company hiring its 101st employee if ads are left up slightly too long across multiple platforms. Characterized it as anti-business legislation.
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.
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 10/20/2026. 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, American Community Survey 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.