Versions of See prior versions of a law on LawServer 2023 South Dakota Codified Laws 9-20-8. Percentage of voters required to sign referendum petition–Data concerning signers 2022 South Dakota Codified Laws 9-20-8. Percentage of voters required to sign referendum petition–Data concerning signers 2021 South Dakota Codified Laws 9-20-8. Percentage of voters required to sign referendum petition–Data concerning signers 2019 South Dakota Codified Laws 9-20-8. Percentage of voters required to sign referendum petition–Data concerning signers 2018 South Dakota Codified Laws 9-20-8. Number of signers required for referendum petition–Data concerning signers 2016 South Dakota Codified Laws 9-20-8. Number of signers required for referendum petition–Data concerning signers 2014 South Dakota Codified Laws 9-20-8. Number of signers required for referendum petition–Data concerning signers 2010 South Dakota Laws 9-20-8 – Number of signers required for referendum petition–Data concerning signers