Revise laws for approval of bond elections and mill levy elections

This bill updates Montana laws governing how bond and mill levy elections are approved, primarily affecting counties, municipalities, and hospital districts. It allows certain bond measures to pass with a simple majority vote if they appear on a primary or general election ballot in an even-numbered year, while raising the voter turnout threshold from 30% to 35% for bonds that require 60% approval in other election types. The legislation also clarifies rules for municipalities seeking to exceed their standard tax levy limits and establishes specific voter turnout percentages that determine whether bond propositions are approved or rejected.