The South Dakota Constitution is the fundamental governing document of the state of South Dakota.
The South Dakota Constitution consists of a preamble followed by 30 articles.
The current (and first) South Dakota Constitution was adopted in 1889.
The 1889 constitution has been amended 11 times since 2006.
The most recent amendments to the South Dakota Constitution, of which there were two, were approved by voters in 2020.
South Dakota has a process for initiated constitutional amendments, which means constitutional amendments can go on the ballot through citizen initiatives, legislatively referred constitutional amendments, or constitutional conventions.