Wis. Stat. § 8.21

Each candidate, except a candidate for presidential elector under s. 8.20 (2) (d) , shall file a declaration of candidacy, no later than the latest time provided for filing nomination papers under s. 8.10 (2) (a) , 8.15 (1) , 8.20 (8) (a) or 8.50 (3) (a) , or the time provided under s. 8.16 (2) or 8.35 (2) (c) . A candidate shall file the declaration with the officer or agency with which nomination papers are filed for the office which the candidate seeks, or if nomination papers are not required, with the clerk or board of election commissioners of the jurisdiction in which the candidate seeks office. The declaration shall be sworn to before any officer authorized to administer oaths. The declaration shall contain the name of the candidate in the form specified under s. 8.10 (2) (b) for candidates for nonpartisan office or s. 8.15 (5) (a) or 8.20 (2) (a) for candidates for partisan office, and shall state that the signer is a candidate for a named office, that he or she meets or will at the time he or she assumes office meet applicable age, citizenship, residency or voting qualification requirements, if any, prescribed by the constitutions and laws of the United States and of this state, and that he or she will otherwise qualify for office if nominated and elected. The declaration shall include the candidate's name in the form in which it will appear on the ballot. Each candidate for state and local office shall include in the declaration a statement that he or she has not been convicted of any misdemeanor designated under state or federal law as a violation of the public trust or any felony for which he or she has not been pardoned. In addition, each candidate for state or local office shall include in the declaration a statement that discloses his or her municipality of residence for voting purposes, and the street and number, if any, on which the candidate resides. The declaration is valid with or without the seal of the officer who administers the oath. A candidate for state or local office shall file an amended declaration under oath with the same officer or agency if any information contained in the declaration changes at any time after the original declaration is filed and before the candidate assumes office or is defeated for election or nomination.