Revise candidate filing and write-in candidate laws

This bill revises Montana's election laws to require candidates for local and state offices to file for nomination before the primary election, preventing unsuccessful primary candidates from running again in the general election through write-in or petition methods. It adjusts signature requirements for third-party and independent candidates, sets specific filing deadlines between 105 and 90 days before elections, and establishes stricter rules about when candidates can withdraw from races. The legislation also clarifies procedures for canceling elections when there are no or few candidates, allowing governing bodies to appoint officials or declare winners by acclamation in certain situations. These changes directly affect voters, candidates, election administrators, and local government officials across Montana.