Missouri Legislature Moves Presidential Primary from February to March Posted on May 7, 2014 by RSS Feed By Richard Winger On March 5, the Missouri legislature passed SB 892, which moves the presidential primary from February to March. Thanks to Frontloading HQ for this news. Source: http://www.ballot-access.org/2014/05/missouri-legislature-moves-presidential-primary-from-february-to-march/