Idaho voters will decide this November whether to centralize drug legalization authority exclusively within the state legislature. House Joint Resolution 4 appears on the ballot, proposing a constitutional amendment that would strip local governments and citizens of the power to legalize marijuana, narcotics, or other psychoactive substances.
Constitutional Change Proposed
The measure seeks to amend Article III, Section 26 of the Idaho Constitution. That section currently grants the legislature full regulatory power over intoxicating liquor, a provision that took effect on December 31, 1934. HJR 4 would expand this exclusive legislative authority to cover all controlled substances.
If approved, the amendment would prohibit counties and cities from passing ordinances to legalize these drugs. It also precludes the use of the initiative process, meaning voters could not bypass the legislature to approve legalization through a direct ballot measure in the future.
Precedent for State Preemption
Supporters point to existing state laws as precedent for such centralization. The Idaho legislature has previously preempted local regulation on several issues, including gun ownership, minimum wage standards, and plastic bag bans. Proponents argue that drug policy requires uniform statewide standards rather than a patchwork of local rules.
Legislative History and Regional Context
The push for centralized control follows previous legislative attempts to address cannabis regulation. During the 2025 session, lawmakers held a hearing on House Bill 401, titled the “Sergeant Kitzhaber Medical Cannabis Act.” The 43-page bill failed to gain traction and did not pass.
The resolution also draws attention to policy shifts in neighboring states. Oregon enacted Measure 110, a citizens initiative that decriminalized various formerly illegal drugs. However, the state effectively repealed that decriminalization framework with House Bill 4002, illustrating the volatility of drug policies established outside the traditional legislative process.
HJR 4 represents a significant shift in how Idaho manages substance control, moving authority firmly away from local jurisdictions and direct democracy mechanisms.