On April 19, the Montana legislature passed SB 408, which provides that the November 2014 ballot will ask voters if they wish to pass a top-two primary system. The vote was 29-20. Because this is just a measure to put a question on the ballot, it does not need to go to the Governor.
Meanwhile, the Secretary of State’s omnibus election law bill, HB 120, which was introduced months before SB 408, still hasn’t passed the legislature. It has passed each house, but the versions were different, and a conference committee will work on producing a single version of the bill.