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Keith M. Corbett

Member

kcorbett@harrisbeachmurtha.com
D: (516) 880-8492  
- Long Island, NY Office
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Partner Keith M. Corbett
Profile
Representative Matters
Resources
Distinctions

Keith is a dynamic litigator who masters the courtroom by explaining complex commercial theories in a simple and understandable manner. He provides creative solutions to vexing client issues with pragmatism and efficiency and is always focused on effective case resolution, however when necessary, he can successfully achieve his client’s goals through trial.

Commercial Litigation

Keith represents mid-size to multinational corporations in complex commercial litigation. He successfully represented a commercial printing company in litigation with one of the world’s largest printing conglomerates. Throughout his career he has represented investors in syndicate litigation, litigated against Sponsors, Boards and professional in cooperative and condominium developments, defended health care providers in factoring agreement cases and appeared for clients in shareholder actions, UCC litigation, commercial lease disputes and products liability cases.

Keith regularly counsels real estate professionals in relation to land use and economic development. He has been a part of some of the largest and most transformative real estate projects in the Long Island region. Keith is familiar with all aspects of commercial and residential development from both municipal and private development perspectives.

Election Law

Keith is a distinguished election law and campaign finance attorney. He routinely assists with the administration of local, state, and federal elections on Long Island. A former Law Chair of the Nassau County Democratic Committee, Keith routinely interposes and defends various election law proceedings under the New York State Election Law. Keith successfully represented candidates of a newly formed Party in being placed on the general election ballot.

He is a former chair of the Democratic Party, mayor of the incorporated Village of Malverne and governor-appointed Commissioner of Long Island State Parks. He’s represented many office holders and candidates in Nassau County, New York, and represented former President Barack Obama in the noted birther case. He also counseled the presidential campaign of President Biden and advised the past three governors of New York.

His experience includes litigating hundreds of ballot-access proceedings across New York state and providing campaign finance and other counsel to constituted committees, trade associations, political action committees and candidates. He also advises clients concerning campaign financial disclosures to the New York State Board of Elections and the Federal Elections Commission.

Municipal Experience

Keith has an extensive municipal practice representing Villages, Towns, Counties and Cities throughout New York State in all facets of municipal litigation, municipal finance and general municipal law advice. Keith successfully defended the second largest Village in the State of New York in a race discrimination claim concerning the Chief of Police position. Keith has served as Village Attorney, Board Counsel, Land Use, Zoning and Planning Counsel and Special Counsel for various municipal and quasi municipal entities. Keith believes resident related concerns should be addressed with pragmatism and efficiency to assist municipal entities in delivering superior services and representation to their local constituents.

  • Lead Counsel in the Regional Expansion of one of Long Island's premier Hospital networks, responsible for developing, managing and overseeing the litigation strategy for a complex SEQRA process taking place in two separate jurisdictions simultaneously.
  • Chief Municipal Litigator for one of the largest urban development projects taking place in New York State's Largest Incorporated Village.
  • Lead Counsel for the residential section of one of New York City's most storied properties in a complex utility and sub-metering case concerning electricity allocations.
  • Lead Counsel for Long Island's Premier Educational Institution and, one of Long Island's largest Hospital networks, in challenging the constitutionality of a municipal sewer fee ordinance.
  • Lead Counsel in a highly publicized and commonly cited municipal employment discrimination case concerning the definition of "Race," which received a jury verdict in favor of the second largest Village in the State of New York.
  • Lead counsel in a highly contested election law proceeding allowing candidates of a newly formed party to be placed on the General Election ballot.
Insights
February 2, 2023

Designating Petitions Subject to New Notary Regulations

The Department of State has issued new rules notaries must follow when notarizing documents, including designating petitions.
November 4, 2022

Eight Critical Steps to a Political Campaign

Running for office is a long and arduous process. Politics can be messy. Here are eight steps integral to a political campaign.
November 4, 2022

Navigating Campaign Finance can be Treacherous for Candidates

One of the most challenging aspects of running for office is navigating campaign finance laws.
November 4, 2022

Five Tips for Employers During Election Season

There are reasons – both legal and in the name of good citizenship – for employers to permit political discourse.
February 11, 2021

Politics in the Workplace: Understanding the Rights of Employees

Following an election season like no other, and looking forward to this year’s election cycle, many individuals have started to reflect on t
News
November 19, 2025

Partner Keith M. Corbett Receives Long Island Business News Leaders in Law Award

The award recognizes dedicated individuals whose leadership has had a positive impact on Long Island.
October 30, 2025

29 Harris Beach Murtha Attorneys Selected to 2025 New York Metro Super Lawyers and Super Lawyers: Rising Stars Lists

Super Lawyers is a nationally recognized professional survey and ranking service of accomplished attorneys.
October 6, 2025

Media Outlets Consult Political Law Practice Co-Leader Keith M. Corbett

Harris Beach Murtha’s attorneys are seen as thought leaders and go-to lawyers for complex political challenges.
September 10, 2025

Keith M. Corbett to Receive Long Island Business News Leaders in Law Award

The awards recognize individuals whose leadership, both in the legal profession and the community, has had a positive impact on Long Island.
October 25, 2024

Political Law Leader Quoted in Newsday Article on NY Assembly Race Residency Debate

In a recent Newsday article, Keith Corbett, partner and co-leader of Harris Beach’s Political Law Practice Group, weighed in on election law
September 27, 2024

Harris Beach Political Law Practice Leaders Named PoliticsNY & amNY Metro 2024 Power Players

The Power Players list recognizes leaders who shape politics and public policy in New York and across the nation.
November 4, 2022

Harris Beach PLLC Launches Political Law Practice Focused on Election Law, Campaign Finance and Lobbying Compliance Matters

Harris Beach is launching a political law practice that will provide a range of election law, campaign finance and lobbying compliance legal
October 15, 2021

Court Dismisses Wrongful Prosecution Case

Partner Keith M. Corbett and Associate Stephanie L. Tanzi of our Long Island office successfully defended the second-largest village in New
Events

Keith Corbett Presenting at The County Attorneys’ Association of the State of New York (CAASNY) Annual Meeting

May 20, 2024
Keith Corbett will present “Introduction to New York Voting Rights Act (“NYVRA”).”
External Publications

Professional and Civic

  • New York State Bar Association, Member
  • Nassau County Bar Association, Member
  • New Jersey Bar Association, Member
  • District of Columbia Bar, Member
  • Incorporated Village of Malverne, Mayor
  • Nassau County Democratic Committee, Law Chair

Recognition

  • Super Lawyers, Business Litigation, since 2025
  • Super Lawyers: Rising Stars, Business Litigation, 2014-2018
  • Long Island Business News, Leaders in Law Award, 2025
Admissions
District of ColumbiaNew JerseyNew YorkU.S. District Court, New JerseyU.S. District Court, New York - Eastern DistrictU.S. District Court, New York - Southern District
Education

New York Law School

JD 
2005

Dickenson College

BA 
2001

Capabilities

Legal Practices

Co-Leader for:

Political Law

Member of:

Political Law
Business Litigation
Public Finance and Economic Development

Industry Teams

Member of:

Health Care
Municipalities and Local Agencies
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Partner Keith M. Corbett

Keith M. Corbett

Member

kcorbett@harrisbeachmurtha.com
Capabilities
People
Harris Beach Murtha Attorneys at Law
Partner Keith M. Corbett

Keith M. Corbett

kcorbett@harrisbeachmurtha.com
D: (516) 880-8492
Long Island, NY Office

Profile

Keith is a dynamic litigator who masters the courtroom by explaining complex commercial theories in a simple and understandable manner. He provides creative solutions to vexing client issues with pragmatism and efficiency and is always focused on effective case resolution, however when necessary, he can successfully achieve his client's goals through trial.

Commercial Litigation

Keith represents mid-size to multinational corporations in complex commercial litigation. He successfully represented a commercial printing company in litigation with one of the world's largest printing conglomerates. Throughout his career he has represented investors in syndicate litigation, litigated against Sponsors, Boards and professional in cooperative and condominium developments, defended health care providers in factoring agreement cases and appeared for clients in shareholder actions, UCC litigation, commercial lease disputes and products liability cases.

Keith regularly counsels real estate professionals in relation to land use and economic development. He has been a part of some of the largest and most transformative real estate projects in the Long Island region. Keith is familiar with all aspects of commercial and residential development from both municipal and private development perspectives.

Election Law

Keith is a distinguished election law and campaign finance attorney. He routinely assists with the administration of local, state, and federal elections on Long Island. A former Law Chair of the Nassau County Democratic Committee, Keith routinely interposes and defends various election law proceedings under the New York State Election Law. Keith successfully represented candidates of a newly formed Party in being placed on the general election ballot.

He is a former chair of the Democratic Party, mayor of the incorporated Village of Malverne and governor-appointed Commissioner of Long Island State Parks. He’s represented many office holders and candidates in Nassau County, New York, and represented former President Barack Obama in the noted birther case. He also counseled the presidential campaign of President Biden and advised the past three governors of New York.

His experience includes litigating hundreds of ballot-access proceedings across New York state and providing campaign finance and other counsel to constituted committees, trade associations, political action committees and candidates. He also advises clients concerning campaign financial disclosures to the New York State Board of Elections and the Federal Elections Commission.

Municipal Experience

Keith has an extensive municipal practice representing Villages, Towns, Counties and Cities throughout New York State in all facets of municipal litigation, municipal finance and general municipal law advice. Keith successfully defended the second largest Village in the State of New York in a race discrimination claim concerning the Chief of Police position. Keith has served as Village Attorney, Board Counsel, Land Use, Zoning and Planning Counsel and Special Counsel for various municipal and quasi municipal entities. Keith believes resident related concerns should be addressed with pragmatism and efficiency to assist municipal entities in delivering superior services and representation to their local constituents.

Areas of Expertise

Legal Practices

Co-Leader for:

Political Law

Member of:

Political Law
Business Litigation
Public Finance and Economic Development

Industry Teams

Member of:

Health Care
Municipalities and Local Agencies

Focuses

Please select listing to show.

Admissions

District of ColumbiaNew JerseyNew YorkU.S. District Court, New JerseyU.S. District Court, New York - Eastern DistrictU.S. District Court, New York - Southern District

Representative Matters

  • Lead Counsel in the Regional Expansion of one of Long Island’s premier Hospital networks, responsible for developing, managing and overseeing the litigation strategy for a complex SEQRA process taking place in two separate jurisdictions simultaneously.
  • Chief Municipal Litigator for one of the largest urban development projects taking place in New York State’s Largest Incorporated Village.
  • Lead Counsel for the residential section of one of New York City’s most storied properties in a complex utility and sub-metering case concerning electricity allocations.
  • Lead Counsel for Long Island’s Premier Educational Institution and, one of Long Island’s largest Hospital networks, in challenging the constitutionality of a municipal sewer fee ordinance.
  • Lead Counsel in a highly publicized and commonly cited municipal employment discrimination case concerning the definition of “Race,” which received a jury verdict in favor of the second largest Village in the State of New York.
  • Lead counsel in a highly contested election law proceeding allowing candidates of a newly formed party to be placed on the General Election ballot.

Distinctions

Professional and Civic

  • New York State Bar Association, Member
  • Nassau County Bar Association, Member
  • New Jersey Bar Association, Member
  • District of Columbia Bar, Member
  • Incorporated Village of Malverne, Mayor
  • Nassau County Democratic Committee, Law Chair

Recognition

  • Super Lawyers, Business Litigation, since 2025
  • Super Lawyers: Rising Stars, Business Litigation, 2014-2018
  • Long Island Business News, Leaders in Law Award, 2025
Attorney Advertising. Prior results do not guarantee a similar outcome. © 2026 Harris Beach Murtha Cullina PLLC
Content current as of September 7, 2026 11:07 pm