2026 South Dakota Amendment L

South Dakota Amendment L, officially the 60% Vote Requirement for Constitutional Amendments Measure, is an legislatively referred constitutional amendment that will appear on the ballot in the U.S. state of South Dakota on November 3, 2026, concurrent with the 2026 United States elections.

Background

Currently in South Dakota, constitutional amendments can be placed on the ballot by the South Dakota Legislature. Voters can approve or reject amendments if the amendment reaches 50% of votes cast. Amendment L was first placed on the ballot after it was approved by the legislature in early 2025.

Impact

If approved by voters, the threshold that amendments must reach to be approved would be raised from 50% to 60%.

Campaign

The Voter Defense Association of South Dakota launched a campaign against the amendment in May 2025. The president of the organization argued that raising the threshold would weaken the ballot initiative process.