Medical marijuana supporters are already planning to gather signatures for a voter initiative to block strict regulations set to become law this summer.
Last month the Legislature passed a bill that limits access to marijuana by doing away with pot businesses and setting new standards for patients and doctors.
Gov. Brian Schweitzer says he will allow the bill to become law without his signature.
Marijuana advocates are planning on lobbying the governor to veto the bill before his May 13 deadline. They also plant to collect signatures for a ballot initiative and ready a possible lawsuit.
On the other side of the issue, advocates for repealing medical marijuana say they are pleased with legislative results.
They say they will work to implement similar restrictions in other medical-marijuana states.
Story from The Associated Press