How to Run for County Board in Wisconsin

Most people who want to run for county board find out the same thing late: there's no county board race on the ballot in 2027. The seats come up in even years, so the next one is April 2028.

Tony RuffiOct 4, 20269 min read

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This article covers when you file, what you file, and how many signatures it takes. By the end of it, you'll know the dates, the forms, and what wins a small district seat. You'll also have a plan for the year before papers go out, which is the time that decides most of these races.

When is the next county board election in Wisconsin?

In most Wisconsin counties, supervisors are elected on the first Tuesday in April of even-numbered years. The next county board election is April 4, 2028. You can start collecting signatures on December 1, 2027, and your papers are due by 5 p.m. on January 4, 2028.

We worked these dates out from state law, because the Wisconsin Elections Commission hasn't posted its 2028 calendar yet. Check the Wisconsin Elections Commission when it comes out. A seat can also open sooner than that. If a supervisor leaves mid-term, the board chair, with the board's OK, can name a replacement, and the board can order a special election. Ask your county clerk if a seat in your county is open.

What does a Wisconsin county supervisor do?

A county supervisor is one vote on the county board, the group that runs county business. State law says the board manages the county's affairs, raises taxes, and decides how to spend money (Wis. Stat. § 59.51). Most counties have to write a budget every year and hold public hearings on it before they set the tax bill (§ 65.90).

That's the heart of the job: the budget. (The state's county board law is short and worth a read.) Most counties also pay for things people see every day, like the sheriff's office, the jail and county roads. What a county does can change from one county to the next, so read your own county's budget before you say what you'd do.

Supervisors usually sit on committees too. The board chair names those committees, if the board lets the chair do that (§ 59.13). Pay is set by the board. Most counties pay a per diem, which is a set amount for each day you attend a meeting. A board can also vote to pay a yearly salary instead (§ 59.10). Look up what your county pays, and how many meetings a month you're signing up for.

County boards also draw their district lines again after each census, the count of who lives where, which comes every ten years. New lines mean some voters have never heard of you, even if you've lived there your whole life.

What do you file to run for county board?

You file three things: nomination papers, a Declaration of Candidacy, and a campaign registration statement. Unlike a village or city race, your papers go to the county clerk, because state law says county offices are filed in the county clerk's office (Wis. Stat. § 8.10(6)).

1. Nomination papers. These are the sheets voters sign to put your name on the ballot. Each signer has to live in your district, can sign for you only once, and has to print their name, address and the date.
2. Declaration of Candidacy. A sworn form that says you're running and that you meet the age, citizenship and residency rules for the seat. You also state that you have no felony conviction, unless you were pardoned, and no misdemeanor that the law calls a violation of the public trust (§ 8.21).
3. Campaign registration statement. This is how your campaign gets registered with the state's money rules.

Here's one to watch. State law changes on December 1, 2027, so that candidates register with the Wisconsin Ethics Commission instead of the local filing officer (Wis. Stat. § 11.0202, as changed by 2023 Wisconsin Act 126 and 2025 Wisconsin Act 7). That falls on the same day signatures open for the 2028 race. Before that date, you'd have filed with the county clerk. Ask both offices where yours goes.

If you don't expect to raise, spend or owe more than $2,500 in a calendar year, you can claim an exemption that skips the full money reports. Register either way.

How many signatures do you need to run for county board?

It depends on how many people live in your county. A county under 100,000 people needs 20 to 100 signatures for a supervisor seat. A county between 100,000 and 750,000 needs 100 to 200. Milwaukee County, the only one over 750,000, needs 200 to 400 (Wis. Stat. § 8.10(3)).

One twist: a county with 100,000 to 750,000 people can pass a local law that cuts its range to 50 to 200 (§ 8.10(3m)). Ask your clerk which range your county uses, and ask before you print anything.

Our rule is to collect at least 20% more names than the minimum. Some names always get thrown out. A signer might live outside your district, sign twice, or write an address nobody can read. The clerk decides what counts, and there's no do-over after the deadline. If you file more than the top number, the clerk only has to check the extra names when the first batch comes up short (§ 8.10(7)).

A county board district is small, so nearly everyone who signs lives within a few miles of you. That's a gift. Every signer is a neighbor, and a neighbor who signs is a neighbor you can ask to put up a sign or tell a friend. Work out your district's boundary on the county's map before you knock on the first door, because a signer who lives one street over the line doesn't count.

This isn't a full list of what makes a signature bad, and it isn't legal advice. Get real voters from inside your district, and make sure each line has a printed name, an address and a date.

What actually wins a county board seat?

A small district is won on the doors. County board seats are one of the few offices where one person can meet a large share of the voters in a few months. When a seat is decided by a few hundred votes, a few dozen doors can matter.

Here's what we'd put first:

• Knock doors with every spare minute. Any free time you have goes to doors, not "a couple of hours a week." Start the day after you decide, not in January.
• Have one sentence on why you want this seat. Say it the same way at every door. "I want to keep the county's budget honest" works better than a list of ten issues.
• Know three numbers from the county budget. Voters can tell when a candidate has read it. Pick the biggest cost, the biggest change from last year, and one thing you'd cut or protect.
• Build a simple website you own. Put your name, your reason, your plan and a way to reach you. Own the domain name yourself, never a builder or a friend. A site lets you tell your own story instead of leaving it to whoever writes the next article about the race.
• Get on the signs early. A candidate whose name voters have seen ten times already has a head start at the door. Our yard sign rules article covers where signs can go.

On a county board race, it's hard to see what the other side is doing. You can't tell what they're putting out, how many doors they're knocking, or whether they knock them or send volunteers. We worked with a sitting county board member who found out the answer at the doors. Our client's own door knocking showed us what the mailers said, what they attacked him with, and how we could answer. It showed us which problems people really cared about. We also learned that his opponent had volunteers, what the opponent was saying about our candidate, and that the opponent wasn't knocking many doors himself. Every one of those facts came from talking to voters on their porches.

A county board seat can also be a first step. Robin Vos won a seat on the Racine County Board in 1994 and stayed for ten years. He then ran for the State Assembly in 2004 and later became its Speaker. Not every supervisor wants to go further, and you don't have to. But the people you meet and the budget you learn will help in any later race.

We also know what a first-timer can do. Yauo Yang had never run for anything. In 2026 he won a Wausau School Board seat with 8,231 votes, the most in a six-candidate race for four seats. The same plan applies at the county level: start early, be everywhere in the district, and never skip a street.

What should you do in the year before you file?

You have about 14 months from now until papers are due. Use them well, because the candidates who start in December are the ones who run out of time in January. Here's a plan, month by month, that fits around a job and a family.

1. October to December 2026. Call your county clerk. Find out which district you're in, which supervisor holds the seat, and whether the seat is still open. Get a copy of the district map.
2. January to June 2027. Go to county board and committee meetings. Most boards post their agendas and budgets online. Read the last year of them.
3. July to November 2027. Meet the people who run things you care about, like town chairs, village presidents, fire chiefs and clerks. Settle on your reason for running, and write it in one sentence.
4. December 1, 2027. Start collecting names. Aim to be done with your extra 20% in the first two weeks.
5. Before January 4, 2028. File a few days early, so a printer jam or a sick day can't cost you the race.

What we'd do this week

If you're thinking about 2028, you don't have to decide today. But three things are free and they pay off no matter what you decide.

• Call the county clerk and ask which district you're in and when the seat comes up.
• Read the county's current budget, even just the summary page.
• Go to one county board meeting and sit in the back.

This article is general information, not legal advice. Laws and deadlines change, and the 2028 dates here come from our reading of state law. Confirm the requirements for your seat with the Wisconsin Elections Commission and your county clerk.

Want a plan for the year before you file? We work with candidates at every level, from school board to Congress & governor, through our campaign consulting team. Book a free consultation whenever you're ready. You can also read about running for city council, running for mayor and Wisconsin nomination papers, or browse more Running for Office articles.

Fact-checked October 4, 2026 against Wis. Stat. §§ 5.02, 8.10, 8.11, 8.21, 11.0104, 11.0202, 59.10, 59.13, 59.51 and 65.90, read on docs.legis.wisconsin.gov.