Wis. Stat. § 63.51: The improper use or promise of political influence forbidden.

No person while holding any office in the government of such city, or any nomination for, or while seeking a nomination for appointment to any such office, shall corruptly use, or promise to use, either directly or indirectly, any official authority or influence in the way of conferring upon any person, or in order to secure or aid any person in securing, any office or public employment or any nomination, confirmation, promotion or increase in salary, upon the consideration or condition that the vote or political influence or action of the last named person or any other shall be given or used in behalf of any candidate, officer or party, or upon any other corrupt condition or consideration.