HB423 revises Montana's election laws concerning the maintenance of active and inactive voter-registration lists. It mandates that if an election administrator receives undeliverable mail or if a voter fails to respond to a confirmation request, a follow-up notice must be sent within 30 days. This notice should be a forwardable, first-class, postage-paid, self-addressed return notice, facilitating easier communication with voters.

The Montana State Senate passed HB423 on April 14, 2025 by a vote of 31 to 17. We have assigned pluses to the ayes because any effort to clean up voter rolls is a step toward ensuring election integrity. States should exercise their authority under Article 1, Section 4 of the U.S. Constitution to implement free, fair, and secure elections.