Wis. Stat. § 10.05
Unless specifically designated elsewhere, this section applies to villages, towns and school districts. Whenever a notice is required to be published, a village, town or school district may post 3 notices in lieu of publication under ch. 985 whenever there is not a newspaper published within the village, town or school district or whenever the governing body of the village, town or school district chooses to post in order to supplement notice provided in a newspaper. Whenever the manner of giving notice is changed by the governing body, the body shall give notice of the change in the manner used before the change. Whenever posting is used, the notices shall be posted no later than the day prescribed by law for publication, or if that day falls within the week preceding the election to be noticed, at least one week before the election. All notices given for the same election shall be given in the same manner.
Wis. Stat. § 10.05