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Candidate Filing Periods


See the Presidential Candidates page for information about when and how Presidential candidates should file.

Before a general election, there is a two-week filing period during which candidates can submit their affidavit of candidacy to the filing officer. Prospective candidates should contact the filing officer to learn which offices will be on the ballot at the upcoming election—some offices may only be up for election every two, three, four, or six years. Special elections to fill vacancies may have filing periods of different lengths.

Federal Offices

Candidates for U.S. Senator and U.S. Representative may file from May 22, 2018 until June 5, 2018 at 5 pm.

State Offices

Candidates for Governor and Lieutenant Governor, Secretary of State, State Auditor, Attorney General, State Representative, and any Judicial office may file from May 22, 2018 until June 5, 2018 at 5 pm.

County Offices

Candidates for county offices such as County Commissioner and Soil and Water Supervisor may file from May 22, 2018 until June 5, 2018 at 5 pm.

City Offices

The filing dates for city offices such as Mayor and Council Member depend on whether the city holds primaries or not.

  • Candidates in cities where a primary is possible may file from May 22, 2018 until June 5, 2018 at 5 pm.
  • Candidates in cities where a primary is not held may file from July 31, 2018 until August 14, 2018 at 5 pm.

Township Offices

The filing dates for township offices such as Town Supervisor, Town Clerk, and Town Treasurer depend on whether the town holds its elections in March or November.

  • Candidates in towns that hold elections in March may file from January 2, 2018 until January 16, 2018 at 5 pm.
  • Candidates in towns that hold elections in November may file from July 31, 2018 until August 14, 2018 at 5 pm.

School District Offices

The filing dates for school district offices such as School Board Member depend on whether the school district holds primaries or not.

  • Candidates in school districts where a primary is possible may file from May 22, 2018 until June 5, 2018 at 5 pm.
  • Candidates in school districts where a primary is not held may file from July 31, 2018 until August 14, 2018 at 5 pm.

Summary of Filing Dates

Summary of 2018 Filing Dates
Filing Period Applicable Offices Filing Opens Filing Closes Withdrawal Deadline
Early Filing Period
  • Federal Offices
  • State Offices
  • Judicial Offices
  • County Offices
  • If primary is possible:
    • City Offices
    • School District Offices
5/22/18 6/5/18 6/7/18
Late Filing Period
  • If primary is not possible:
    • City Offices
    • School District Offices
  • Township Offices with November elections
7/31/18 8/14/18 8/15/18
Township Filing Period
  • Township Offices with March elections
1/2/18 1/16/18 1/18/18
Summary of 2019 Filing Dates
Filing Period Applicable Offices Filing Opens Filing Closes Withdrawal Deadline
Early Filing Period
  • If primary is possible:
    • City Offices
    • School District Offices
5/21/19 6/4/19 6/6/19
Late Filing Period
  • If primary is not possible:
    • City Offices
    • School District Offices
7/30/19 8/13/19 8/15/19
Township Filing Period
  • Township Offices with March elections
1/2/19 1/15/19 1/17/19
Summary of 2020 Filing Dates
Filing Period Applicable Offices Filing Opens Filing Closes Withdrawal Deadline
Early Filing Period
  • Federal Offices
  • State Offices
  • Judicial Offices
  • County Offices
  • If primary is possible:
    • City Offices
    • School District Office
5/19/20 6/2/20 6/4/20
Late Filing Period
  • If primary is not possible:
    • City Offices
    • School District Offices
  • Township Offices with November elections
7/28/20 8/11/20 8/13/20
Township Filing Period
  • Township Offices with March elections
12/31/19 1/14/20 1/16/20