New Jersey State Senate District 18
Next vote Tue, Nov 2, 2027 · Represented by Patrick Diegnan Democratic · Member list as of Oct 28
We don’t have the candidate list for this race. See the official list at the New Jersey Division of Elections
- Last election
- Patrick Diegnan (Democratic) won by 28.0 points, 2023
- Earlier results
- Patrick Diegnan (Democratic) won by 21.3 points, 2021, older linesPatrick Diegnan (Democratic) won by 31.2 points, 2017, older linesAll 16 elections
Past results
- Votes for listed candidates
- 37,955
- Election day
- November 7, 2023
- District map
- Same as today
New Jersey Senate District 18, 1973 to 2023, 2023, every candidate Candidate Party Votes and share Share DemocraticPatrick DiegnanWon(incumbent)Name as filed: Patrick J. Diegnan Jr. Democratic 24,29464.0% RepublicanNeal Shah Republican 13,66136.0% - Votes for listed candidates
- 58,781
- Election day
- November 2, 2021
- District map
- Older district map (2011 to 2022)
New Jersey Senate District 18, 1973 to 2023, 2021, every candidate Candidate Party Votes and share Share DemocraticPatrick DiegnanWon(incumbent)Name as filed: Patrick J. Diegnan Jr. Democratic 35,63760.6% RepublicanVihal R. Patel Republican 23,14439.4% - Votes for listed candidates
- 49,035
- Election day
- November 7, 2017
- District map
- Older district map (2011 to 2022)
New Jersey Senate District 18, 1973 to 2023, 2017, every candidate Candidate Party Votes and share Share DemocraticPatrick DiegnanWonName as filed: Patrick J. Diegnan Jr. Democratic 32,17565.6% RepublicanLewis Glogower Republican 16,86034.4% - Votes for listed candidates
- 48,247
- Election day
- November 5, 2013
- District map
- Older district map (2011 to 2022)
New Jersey Senate District 18, 1973 to 2023, 2013, every candidate Candidate Party Votes and share Share DemocraticPeter BarnesWon Democratic 25,06352.0% RepublicanDavid Stahl Republican 23,18448.0%
- 2023: New Jersey Division of Elections official general election lists 2023 and 2025, retrieved Oct 28, 2026
- 1973 to 2021: State Legislative Election Returns, 1967-2022 (Carl Klarner, Harvard Dataverse), retrieved Oct 28, 2026. Compiled by Carl Klarner (Harvard Dataverse) from official returns; not an official source
Last contest in this district on file: 2023.
All elections (16 for this seat)
- Votes for listed candidates
- 37,955
- Election day
- November 7, 2023
- District map
- Same as today
New Jersey Senate District 18, 1973 to 2023, 2023, every candidate Candidate Party Votes and share Share DemocraticPatrick DiegnanWon(incumbent)Name as filed: Patrick J. Diegnan Jr. Democratic 24,29464.0% RepublicanNeal Shah Republican 13,66136.0% - Votes for listed candidates
- 58,781
- Election day
- November 2, 2021
- District map
- Older district map (2011 to 2022)
New Jersey Senate District 18, 1973 to 2023, 2021, every candidate Candidate Party Votes and share Share DemocraticPatrick DiegnanWon(incumbent)Name as filed: Patrick J. Diegnan Jr. Democratic 35,63760.6% RepublicanVihal R. Patel Republican 23,14439.4% - Votes for listed candidates
- 49,035
- Election day
- November 7, 2017
- District map
- Older district map (2011 to 2022)
New Jersey Senate District 18, 1973 to 2023, 2017, every candidate Candidate Party Votes and share Share DemocraticPatrick DiegnanWonName as filed: Patrick J. Diegnan Jr. Democratic 32,17565.6% RepublicanLewis Glogower Republican 16,86034.4% - Votes for listed candidates
- 48,247
- Election day
- November 5, 2013
- District map
- Older district map (2011 to 2022)
New Jersey Senate District 18, 1973 to 2023, 2013, every candidate Candidate Party Votes and share Share DemocraticPeter BarnesWon Democratic 25,06352.0% RepublicanDavid Stahl Republican 23,18448.0% - Votes for listed candidates
- 32,673
- Election day
- November 8, 2011
- District map
- Older district map (2011 to 2022)
New Jersey Senate District 18, 1973 to 2023, 2011, every candidate Candidate Party Votes and share Share DemocraticBarbara BuonoWon(incumbent) Democratic 19,63160.1% RepublicanGloria S. Dittman Republican 13,04239.9% - Votes for listed candidates
- 34,261
- Election day
- November 6, 2007
- District map
- Older district map (2001 to 2010)
New Jersey Senate District 18, 1973 to 2023, 2007, every candidate Candidate Party Votes and share Share DemocraticBarbara BuonoWon(incumbent) Democratic 21,36562.4% RepublicanDaniel H. Brown Republican 12,89637.6% - Votes for listed candidates
- 31,736
- Election day
- November 4, 2003
- District map
- Older district map (2001 to 2010)
New Jersey Senate District 18, 1973 to 2023, 2003, every candidate Candidate Party Votes and share Share DemocraticBarbara A. BuonoWon(incumbent) Democratic 18,56158.5% RepublicanRichard F. Plechner Republican 13,17541.5% - Votes for listed candidates
- 51,551
- Election day
- November 6, 2001
- District map
- Older district map (2001 to 2010)
New Jersey Senate District 18, 1973 to 2023, 2001, every candidate Candidate Party Votes and share Share DemocraticBarbara A. BuonoWon Democratic 33,48765.0% RepublicanJohn G. Cito Republican 18,06435.0% - Votes for listed candidates
- 60,510
- Election day
- November 4, 1997
- District map
- Older district map (1991 to 2000)
New Jersey Senate District 18, 1973 to 2023, 1997, every candidate Candidate Party Votes and share Share RepublicanJack SinagraWon(incumbent) Republican 35,40058.5% DemocraticThomas H. Paterniti Democratic 25,11041.5% - Votes for listed candidates
- 63,103
- Election day
- November 2, 1993
- District map
- Older district map (1991 to 2000)
New Jersey Senate District 18, 1973 to 2023, 1993, every candidate Candidate Party Votes and share Share RepublicanJack SinagraWon(incumbent) Republican 36,73658.2% DemocraticSamuel V. Convery Jr. Democratic 25,10639.8% OtherKevin Michael Criss Other 1,2612.0% - Votes for listed candidates
- 53,527
- Election day
- November 5, 1991
- District map
- Older district map (1991 to 2000)
New Jersey Senate District 18, 1973 to 2023, 1991, every candidate Candidate Party Votes and share Share RepublicanJack SinagraWon Republican 28,63853.5% DemocraticHarry S. Pozycki Democratic 24,88946.5% - Votes for listed candidates
- 52,043
- Election day
- November 3, 1987
- District map
- Older district map (1981 to 1990)
New Jersey Senate District 18, 1973 to 2023, 1987, every candidate Candidate Party Votes and share Share DemocraticThomas H. PaternitiWon Democratic 30,79059.2% RepublicanPeter P. Garibaldi(incumbent) Republican 21,25340.8% - Votes for listed candidates
- 50,980
- Election day
- November 8, 1983
- District map
- Older district map (1981 to 1990)
New Jersey Senate District 18, 1973 to 2023, 1983, every candidate Candidate Party Votes and share Share RepublicanPeter P. GaribaldiWon Republican 24,39747.9% DemocraticJames Bornheimer(incumbent) Democratic 23,81446.7% IndependentRobert Maurer Independent 2,7695.4% - Votes for listed candidates
- 60,236
- Election day
- November 3, 1981
- District map
- Older district map (1981 to 1990)
New Jersey Senate District 18, 1973 to 2023, 1981, every candidate Candidate Party Votes and share Share DemocraticJames BornheimerWon Democratic 31,38352.1% RepublicanPeter P. Garibaldi Republican 28,85347.9% - Votes for listed candidates
- 59,228
- Election day
- November 8, 1977
- District map
- Older district map (1973 to 1980)
New Jersey Senate District 18, 1973 to 2023, 1977, every candidate Candidate Party Votes and share Share DemocraticBernard J. DwyerWon(incumbent) Democratic 34,14457.6% RepublicanS. Elliott Mayo Republican 23,80340.2% IndependentEdward R. Gavarny Independent 1,2812.2% - Votes for listed candidates
- 57,907
- Election day
- November 6, 1973
- District map
- Older district map (1973 to 1980)
New Jersey Senate District 18, 1973 to 2023, 1973, every candidate Candidate Party Votes and share Share DemocraticBernard J. DwyerWon Democratic 36,60663.2% RepublicanFuller H. Brooks Republican 21,30136.8%
- 2023: New Jersey Division of Elections official general election lists 2023 and 2025, retrieved Oct 28, 2026
More about this seat
District map
Select a shape for details. Arrow keys move between shapes.
- Democratic
- Republican
- Independent
- Nonpartisan
- More than one party
- No member listed
Map settings
Vote in New Jersey
Trouble voting? Election Protection hotline: 866-OUR-VOTE. A nonpartisan coalition of civil-rights and voting-rights groups, not a government service. 866ourvote.org
Official results for New Jersey
Download and cite
Cite this page
Election Wrld. (2026). New Jersey State Senate District 18, election results 1973 to 2023. https://www.electionwrld.com/nj/senate/18. Retrieved October 31, 2026.
Embed this seat
<iframe src="https://www.electionwrld.com/embed/nj/senate/18" title="New Jersey Senate District 18" width="100%" height="400" style="border:0;max-width:640px" loading="lazy"></iframe>
<p style="font-size:13px">Data: <a href="https://www.electionwrld.com">Election Wrld</a>, CC BY 4.0</p>Paste this into any web page. It shows the seat, its last result and the next election.
Sources
Sources: Census TIGERweb Legislative MapServer (120th CDs layer 0, 119th CDs layer 4, 2026 SLD upper layer 1 and lower layer 2) (US Census Bureau, public domain), retrieved Oct 28, 2026; Open Civic Data division identifiers (census_autogenerated us_sldl/us_sldu and openstates state files); also (sld-recent.json): Open Civic Data division identifiers (country-us) (CC0 (repository); also (sld-recent.json): CC0 1.0), retrieved Oct 28, 2026; Open States people (current) CSVs (CC0-1.0 (Open States people data)), retrieved Oct 28, 2026, compiled by Open States volunteers and staff (rosters from state legislature sites) from official returns, not an official source; New Jersey Division of Elections official general election lists 2023 and 2025 (US state public record), retrieved Oct 28, 2026; State Legislative Election Returns, 1967-2022 (Carl Klarner, Harvard Dataverse) (CC0 1.0), retrieved Oct 28, 2026, compiled by Carl Klarner (Harvard Dataverse) from official returns, not an official source.
DataState data (JSON)Sources: State Legislative Election Returns, 1967-2022 (Carl Klarner, Harvard Dataverse), New Jersey Division of Elections official general election lists 2023 and 2025Data as of Oct 28, 2026