Kan. Admin. Regs. § 49-10-2
The collective bargaining unit and the employer may each designate a person to observe that the ballots are properly cast and voting properly conducted at each voting station. There shall be not more than one observer for each party. These observers are subject to such limitations as the commissioner or his supervisor may prescribe. Employer observers are limited to people in a nonsupervisory capacity. Collective bargaining unit observers shall not be union officials or business agents. Any authorized observer or the commissioner or his representative may challenge for good cause the eligibility of any person to participate in the election. There shall be no campaigning within fifty (50) feet of any voting station while the election is being conducted.
Kan. Admin. Regs. § 49-10-2