Wisconsin Statutes Elections (Ch. 5 to 12) § 5.37. Voting machine requirements

(1) Voting machines shall give every elector a reasonable opportunity to vote for any person for any office and on any proposition the elector is entitled to vote on, assure privacy to the elector so no one will know how the elector is voting or has voted, preclude the electors from voting for persons or propositions upon which they are not entitled to vote and from voting more than once for the same office or on the same proposition. Voting machines shall be constructed to lock so they cannot be manipulated, tampered with, or show the number of votes registered for any candidate or proposition while voting is in progress. The machines shall permit voting a split ticket and shall record each vote cast.

(2) When 2 or more wards or aldermanic districts are joined to use a voting machine, under s. 5.15(6)(b), the machine shall be constructed to allow the electors to vote for all nominated candidates and issues for their aldermanic district or ward, but for no other.

(3) For presidential electors one device shall be provided to vote for all of one party's electoral candidates at the same time. The device shall be opposite or adjacent to the names of the party's candidates for president and vice president.

(4) Voting machines may be used at primary elections when they comply with subs. (1) and (2) and the following provisions: All candidates' names entitled to appear on the ballots at the primary shall appear on the machine; the elector cannot vote for candidates of more than one party, whenever the restriction applies; the elector may secretly select the party for which he or she wishes to vote; the elector may vote for as many candidates for each office as he or she is lawfully entitled to vote for, but no more.

(5) Polling places may have more than one voting machine.