The short version.
South Dakota is a petition state: there is no candidate filing fee. To get on the ballot you circulate a nominating petition: as a party candidate for the June primary (signed by voters registered with your party), or as an independent heading straight to the November ballot (any registered voter may sign). County candidates file their petitions with the Mellette County Auditor; legislative, statewide, and federal candidates file with the Secretary of State.
This page covers how that works for Mellette County. It is not legal advice; your County Auditor and the Secretary of State's county candidate guide are the sources of truth.
Mellette County at the ballot box.
- In 2024, Mellette County cast 740 votes for president: 38.5% Democratic, 58.6% Republican.
- In 2020, it was 38.8% Democratic to 58.4% Republican across 769 votes.
Election results are public county canvasses. Statewide coverage details: Motion51 in South Dakota.
The petition route (party candidates).
Every South Dakota party candidate
The campaigns that win the field are the ones who start building their list of supporters and volunteers before qualifying even opens, not after. The Mellette County voter file is already loaded in Motion51, so you can start finding your people now.
- Legislature and county offices: signatures from 1% of the voters who voted for your party's candidate for Governor at the last gubernatorial election in the county or district, or 50 voters, whichever is less (SDCL 12-6-7). In most counties that means a small, very achievable number.
- Statewide offices (Governor, U.S. Senate, U.S. House): 1% of your party's gubernatorial vote statewide.
- Who can sign: only voters registered with your party in the area the office serves.
- Where to file: county offices → the Mellette County Auditor; legislative, statewide, and federal offices → the Secretary of State.
Signatures get checked, so collect a comfortable cushion. Candidates who petition well treat it as the first week of the field program: every signer is a confirmed registered voter of your party, and every gatherer is a future volunteer.
Counties that vote at vote centers use slightly different counts (a flat 50 for legislative candidates, half-counts for commissioner districts), and sheriff candidates also file a law-enforcement certification (SDCL 23-3-43.1). Judicial and municipal offices run on separate processes. Your County Auditor will confirm the exact number for your race.
Running as an independent.
Independents skip the June primary and petition straight onto the November ballot (SDCL 12-7-1): signatures from 1% of the total vote for Governor at the last gubernatorial election in the county or district, and any registered voter may sign. The independent deadline is later (the last Tuesday of April at 5:00 p.m.), but the circulation window still opens January 1.
Key South Dakota dates.
Still open for the November 3, 2026 ballot, and it closes on Tuesday
There are TWO South Dakota calendars for the same November ballot, published as separate documents, with deadlines five months apart. The county one closed in the spring. The city and school one has not.
- Tue Aug 25, 2026, 5:00 p.m. STILL OPEN: nominating petitions for CITY and SCHOOL DISTRICT offices whose annual election is on the November 3 date, filed with the municipal finance officer or school business manager (SDCL 9-13-7, 9-13-37, 13-7-6). Registered mail counts if postmarked by the deadline. The window has been open since July 3.
- No such thing WRITE-IN: South Dakota does not count write-in votes for any office, in any election (SDCL 12-20-21.2). There is no declaration because there is nothing to declare.
- Tue Mar 31, 2026 County party nominating petitions -- CLOSED (SDCL 12-6-4).
- Tue Apr 28, 2026 County independent nominating petitions -- CLOSED (SDCL 12-7-1).
Because there is no write-in at all, a missed South Dakota deadline is absolute. And the calendar a search engine hands you is the state one, which closed county filing in March and makes the year look over -- the city and school calendar is a different PDF on the same site.
2027 changed shape, and 2028 brings the county back
A 2025 act rewrote SDCL 9-13-1 and 13-7-10 from January 1, 2026: municipal and school annual elections no longer default to April. They are now the first Tuesday after the first Monday in June OR in November, and the governing body must fix which by January 14 of the election year. So 'when is my election' now has a different answer in the next town over.
- Tue Jun 8 or Tue Nov 2, 2027 COMPUTED city and school annual election -- your town or district chose which back in January (SDCL 9-13-1, 13-7-10 as amended by SL 2025 ch 40). Ask your finance officer.
- Tue Mar 28, 2028 COMPUTED county party nominating petition deadline, the last Tuesday in March (SDCL 12-6-4).
- Tue Apr 25, 2028 COMPUTED county independent petition deadline, the last Tuesday in April (SDCL 12-7-1).
- Tue Jun 6, 2028 COMPUTED primary (SDCL 12-2-1).
- Tue Nov 7, 2028 COMPUTED general election.
Within fifteen days of filing your petition you must also file a Candidate Statement of Financial Interest, and a Statement of Organization if your committee does not have one (SDCL 12-25-28, 12-25-30, 12-27-3).
The 2026 dates come from the South Dakota Secretary of State's two published 2026 calendars -- the state one and the separate city and school one -- read on 2026-08-20. No 2028 calendar exists yet, so those dates are arithmetic from how the 2026 dates fell. Confirm with your county auditor, municipal finance officer or school business manager.
Offices on the 2026 ballot.
Up in 2026 (primary June 2, general November 3):
- U.S. Senate and U.S. House
- Governor
- South Dakota Senate and House — the entire Legislature (all seats, every two years)
- County offices — commissioner, auditor, finance officer (where applicable), sheriff, register of deeds
Vacancies and appointments can put other Mellette County seats on the ballot; confirm the local list with the County Auditor below.
Your County Auditor.
South Dakota runs county elections through its 66 County Auditors. The Mellette County Auditor is where county candidates file petitions, and the source of truth for local dates, districts, signature counts, and forms.
- Office
- PO Box C, White River, SD 57579
- Phone
- (605) 259-3050
Contact details verified 2026-07-03 against the Secretary of State's county auditor directory. If a field is wrong or out of date, the directory above is the canonical source.
After you qualify: building a field operation.
The petition is the paperwork, and in South Dakota it's also your first field test. What comes next is the actual campaign: knocking on doors, recruiting volunteers, and identifying the voters who'll show up for you in the primary and in November.
That's what Motion51 is built for. The Mellette 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 the stretches where cell coverage drops, 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.