Suffolk County Legislator, 3rd Legislative District: Thaddeus I. O'Neil

Thaddeus O'Neil, Democratic candidate for Suffolk County Legislature District 3, poses for a portrait at his home in Brookhaven on Thursday, Sept. 7, 2023. -- slVOTE -- Credit: James Escher
THADDEUS I. O'NEIL
Democratic
BACKGROUND:
- O’Neil, 47, of Brookhaven hamlet, is seeking the 3rd Legislative District seat.
- He is an associate adjunct professor at Parsons The New School for Design and owns an apparel company.
- He graduated from Colgate University with a bachelor’s in geology and from Stony Brook University with a master’s in philosophy.
ISSUES:
- O’Neil said his top issues are protecting the environment and water quality. He said he supports a proposal to hold a referendum on a 0.125% sales tax increase to fund a massive countywide wastewater treatment overhaul.
- He said he supports creating a comprehensive plan to fix the county’s roads and would advocate for federal and state funding to do so.
- He said public safety is an important issue. If elected, he said he would push to expand the Sheriff’s Transition and Reentry Team (START) program that provides individuals with the resources to restart their lives.

Memorial Day 2026: NewsdayTV honors those we've lost A brave young patriot receives a burial 83 years after being lost in war. Volunteers restore a Revolutionary War cemetery. A Gold Star mom makes it her mission to honor her son's sacrifice. NewsdayTV's Virginia Huie shares three stories in honor of Memorial Day.

Memorial Day 2026: NewsdayTV honors those we've lost A brave young patriot receives a burial 83 years after being lost in war. Volunteers restore a Revolutionary War cemetery. A Gold Star mom makes it her mission to honor her son's sacrifice. NewsdayTV's Virginia Huie shares three stories in honor of Memorial Day.

