S.D. Codified Laws § 12-15-9
Before performing election day duties, each precinct superintendent, precinct deputy, and precinct assistant of the election and counting boards shall severally take an oath in the following form:
I, A.B., do solemnly swear (or affirm) that I will perform the duties of precinct superintendent (or precinct deputy or precinct assistant) according to law and the best of my ability and that I will studiously endeavor to prevent fraud, deceit, and abuse and that I will act in an impartial manner in conducting the election about to be held.
The members of the precinct election board may administer the oath to each other. The person administering the oaths shall cause an entry thereof to be made and signed by the person and prefixed to the pollbook. A violation of this oath is a Class 1 misdemeanor.
SDCL 12-15-9