The short version.
Westchester County, New York has 639,756 active registered voters — 19.2% Republican, 49.5% Democratic, and 27.4% with no party affiliation, as of June 2026. Here's what it takes to get on the ballot here.
New York is a petition state: there is no filing fee you can pay to get on the ballot. Instead you earn your place by collecting signatures from voters — either a designating petition to run in a party's June primary, or an independent nominating petition to run on your own line in November. Your county Board of Elections runs the local side of all of it.
This page covers how that works for Westchester County, including the actual number of signatures you'd need here. It is not legal advice — for the official rules, your county Board of Elections and the New York State Board of Elections are the sources of truth.
Westchester County by the numbers.
- 639,756 active registered voters (official New York voter file, June 2026).
- Party enrollment: Democratic 49.5% · Republican 19.2% · no party 27.4% · other parties 3.9%.
- 325,759 supervoters (50.92% — voted in at least 3 of the last 4 November generals). These are the doors reliable-voter campaigns knock first.
- In 2024, Westchester County cast 455,229 votes for president: 63.1% Democratic, 36.9% Republican.
Full statistics, enrollment breakdown, and the most reliable-voting election districts: Westchester County voter data.
How New York ballot access works.
New York is a petition state, not a filing-fee state. There are two ways onto the ballot, depending on whether you want a party's line or your own.
Path 1 — Run in a party primary (designating petition).
To be the Democratic, Republican, Conservative, or Working Families nominee, you circulate a designating petition to get onto that party's June primary ballot. Only voters enrolled in that party who live in the district may sign it. The requirement is 5% of that party's enrolled voters in the district, with statutory caps so the number never runs away (NY Election Law §6-136).
Path 2 — Run without a party line (independent nominating petition).
If you're not seeking a party's nomination, you file an independent nominating petition. Any registered voter in the district may sign it — regardless of party — as long as they haven't already signed a designating petition for the same office. The requirement is 5% of the votes cast for Governor in that district at the last gubernatorial election, again with caps (NY Election Law §6-142).
Three rules that trip up first-timers:
- A voter may sign only one petition per office — duplicates get thrown out.
- Boards check every signature against the voter file. Wrong address, not registered, wrong party (for designating petitions), or duplicates are all rejected — so collect 2–3× the minimum.
- Petitions can be challenged by any voter within days of filing, so clean, well-witnessed sheets matter.
Signatures you'll need in Westchester County.
For a county-wide office, here's the real math from Westchester County's current enrollment. New York caps a county-wide designating petition at 2,000 signatures (counties over 250,000 residents). Where 5% of a party's enrollment is higher than that cap, the cap is what you file; where it's lower — a smaller county, or a single district — the 5% figure is what governs.
- Democratic primary: 5% of 316,902 enrolled Democrats = 15,846, capped at 2,000 → you'd file about 2,000 valid signatures.
- Republican primary: 5% of 122,825 enrolled Republicans = 6,142, capped at 2,000 → about 2,000 valid signatures.
- Independent (non-party) line, county-wide: 5% of Westchester County's last Governor vote, capped at 1,500 signatures.
Smaller districts apply the same 5% rule to that district's enrolled party voters (or governor vote), so the number is lower. Common flat caps statewide: U.S. House 1250 · State Senate 1000 · State Assembly 500 · county legislative district 500.
Always confirm the exact figure for your specific office with Westchester County Board of Elections — they publish official signature-requirement sheets each cycle. (Independent-petition numbers depend on gubernatorial turnout, so we show the statutory cap rather than a computed figure.)
Key New York dates (2026 reference).
- Late Feb – early Apr 2026Designating petitions circulated and filed (filed Mar 30–Apr 6, 2026) for the June primary.
- By late May 2026Independent nominating petitions filed (May 26, 2026 statewide) for the November general.
- Tue Jun 23, 2026New York primary election.
- Tue Nov 3, 2026New York general election.
These are the 2026 dates, shown for reference — the 2026 petitioning windows have already closed. New York publishes each year's exact petition calendar every December; for the next cycle's deadlines see the New York State Board of Elections political calendar.
Offices on the ballot.
Up statewide in 2026 (primary June 23, general November 3):
- Governor & Lieutenant Governor (now a single ticket)
- Attorney General
- State Comptroller
- U.S. House — all 26 seats
- State Senate — all 63 seats
- State Assembly — all 150 seats
Under New York's "Even-Year Election Law," most county and town offices in Westchester County now appear on the even-year (2026) ballot too — county legislators and many local seats among them. Exactly which seats are up varies by county, so your county Board of Elections has the official, district-by-district list.
No U.S. Senate seat is on New York's 2026 ballot. For the official list of Westchester County offices up this cycle, check your county Board of Elections.
Your county Board of Elections.
New York counties run elections through a bipartisan Board of Elections — one Democratic and one Republican commissioner. This is where you file your petitions, and the source of truth for Westchester-County-specific dates, district maps, and signature-requirement sheets.
- Office
- 445 Hamilton Avenue, 8th Floor, White Plains, NY 10601
- Phone
- (914) 995-5700
- Website
- https://citizenparticipation.westchestercountyny.gov/
Contact details verified 2026-06-18. If a field is wrong or out of date, the New York State Board of Elections county directory above is the canonical source.
After you qualify: building a field operation.
The paperwork ends the day your petitions clear. What starts then is the actual campaign — knocking on doors, recruiting volunteers, and identifying the voters who'll show up for you in June and November.
That's what Motion51 is built for. The Westchester County voter file is already loaded — no chasing a CSV or paying a vendor. You scope your district, recruit volunteers, cut turf, and start knocking. The app works offline for neighborhoods with bad cell coverage, and every door is logged with a timestamp.
If qualifying is settled and you're thinking about the field operation, our For Candidates page walks through the next steps.