Wis. Stat. § 12.09: Election threats.

(1) No person may personally or through an agent make use of or threaten to make use of force, violence, or restraint in order to induce or compel any person to vote or refrain from voting at an election.

(2) No person may personally or through an agent, by abduction, duress, or any fraudulent device or contrivance, impede or prevent the free exercise of the franchise at an election.

(3) No person may personally or through an agent, by any act compel, induce, or prevail upon an elector either to vote or refrain from voting at any election for or against a particular candidate or referendum.