SDCL § 12-1-9.1: Ranked choice voting prohibited.

The State Board of Elections may not authorize and a political subdivision may not adopt or enforce in any manner a rule, resolution, charter provision, or ordinance establishing a system of voting for any office where:

(1) Voters rank candidates in order of preference;

(2) Tabulation proceeds in rounds where in each round either a candidate is elected or the last-place candidate is eliminated;

(3) Votes are transferred from elected or eliminated candidates to the voter's next-ranked candidate in order of preference; and

(4) Tabulation ends when a candidate receives the majority of votes cast or the number of candidates elected equals the number of offices to be filled.