Revise times for holding primary elections

Montana's SB 399 would change the timing of primary elections, moving them from June to May in even-numbered years. The bill directly affects all Montana voters participating in primary elections and election officials managing ballot processing. Key provisions include amending the law to set primary dates as "the first Tuesday after the first Monday in May" instead of June, requiring separate ballots for primary and school elections held on the same day (with primary ballots counted first), and mandating that the secretary of state notify Montana's federally recognized tribal governments about the bill. This is a procedural change focused solely on election scheduling and ballot handling.