Generally revise laws related to county and city central committees

This bill updates Montana laws governing how county and city central committees notify precinct representatives about upcoming political conventions. It requires the presiding officer to send convention calls via electronic mail to committee representatives instead of using traditional postal mail. The legislation also clarifies that committee officers do not need to be precinct committee representatives and outlines rules for filling vacancies when representatives are absent. These changes modernize communication methods while maintaining existing procedures for organizing and conducting political party conventions.