The 2027 Collin County local election calendar

If you're running for local office in Collin County in 2027, your entire campaign is built on a handful of fixed dates — and missing any one of them can end your race before it starts. Nearly every city council, school board, and mayoral seat across the county runs on the Texas May Uniform Election Date, which in 2027 falls on Saturday, May 2. This is the canonical calendar: the treasurer rule, the February filing deadline, late-April early voting, Election Day, and the June run-off for city races. Bookmark it, then build your plan backward from May 2.

When is the 2027 local election in Collin County?

The 2027 local election is Saturday, May 1, 2027. Texas holds a single, statewide May Uniform Election Date when almost all local nonpartisan races are decided — city council, mayor, and school board across Frisco, Plano, McKinney, and the county's other cities and districts. Because every jurisdiction shares this date, the deadlines that lead up to it are shared too, which makes the calendar below your single source of truth no matter which seat you're chasing.

What are the key dates for a 2027 Collin County race?

Here is the full sequence for the May 1, 2027 cycle. Treat the dates that aren't legally fixed (filing, early voting) as approximate until your filing authority confirms them — but the structure never changes.

What's the very first thing on the calendar?

It isn't filing — it's your treasurer. Under Texas law you cannot accept a contribution or make an expenditure until you've filed a Campaign Treasurer Appointment (the "CTA"). That means your functional day one comes weeks before the February filing deadline: appoint a treasurer (it can be you), then you're cleared to fundraise, print signs, and build a war chest. Every promising first-timer who takes an early check before filing the CTA creates a compliance headache they didn't need.

1. 1.File your CTA with your filing authority — this unlocks fundraising and spending.
2. 2.File your application for a place on the ballot by the mid-February deadline, with the required signatures or fee.
3. 3.Calendar your finance reports — the 30-day and 8-day pre-election C/OH reports are the ones candidates most often miss.
4. 4.Build backward from May 2 so your voter contact peaks during late-April early voting, not after it.

Is there a run-off in 2027?

For city and mayoral races, yes — if no candidate wins an outright majority on May 2, the top two advance to a run-off on Saturday, June 12, 2027. For school board (ISD) races, no: trustees are typically elected at-large by plurality, so the candidate with the most votes wins outright and there's no run-off. Knowing which rule applies to your seat changes your strategy — a plurality race rewards turning out your own supporters, while a majority race forces you to plan for a possible six-week sprint into June.

How does Collin County's growth change the calendar math?

Collin County is the #2 fastest-growing county in the United States — it added roughly 43,000 residents in a single year, and about 83% of that growth is in-migration. Practically, that means the voter file you pull in January is stale by April: new neighbors have moved in, registrations are still processing, and a static list misses them. Start your voter universe early, refresh it before early voting, and account for the fact that turnout patterns from past Mays may undercount the households that just arrived. See the full Collin County 2027 election calendar and grab the free filing kit to keep every date in one place.

The bottom line

Three dates anchor your 2027 race: treasurer before any money, file by mid-February, and Election Day Saturday, May 2 with a possible city run-off June 13. Confirm the moving pieces with your filing authority, build your plan backward from early voting, and you'll never be caught flat-footed by a deadline. New to all of this? Start with our first-time candidate checklist or see how Mandate runs the whole calendar for you.