Challenges to a Recall Petition
Within 10 days after a recall petition is offered for filing, the officeholder can challenge its sufficiency. The challenge must be made in the form of a written, sworn complaint.
The challenge must specify any alleged insufficiency in the petition. Any challenge to the validity of signatures on a recall petition must demonstrate by affidavits or other supporting evidence a failure to comply with statutory requirements.
The burden of proof is on the challenger. The information on a recall petition is presumed to be valid unless proven otherwise. El.Bd. 2.11., Wis. Adm. Code.
Some of the grounds for challenge and the resulting effect are:
Grounds:
An elector has signed the recall petition more than once.Resulting Effect: The second and subsequent signatures are not counted.
Grounds: A person signed the name of another elector.
Resulting Effect: The signature may not be counted, unless the elector was unable to sign due to physical disability and authorized the individual to sign in his or her behalf. In this case, a notation clarifying the situation should be made on the petition by the signer.
Grounds: An individual is ineligible to sign the petition because he or she is not a qualified elector of the district or jurisdiction.
Resulting Effect: The signature may not be counted.
http://elections.state.wi.us/docview.asp?docid=14632&locid=47