Iowa's Governor Kim Reynolds recently signed an executive order granting voting rights to convicted felons. The state previously barred anyone with a felony conviction from voting unless they appealed directly to the governor. Barring felons from voting is a major hurdle to criminal justice reform because legislators are less likely to enact laws favorable to people who have been convicted of crimes in the past if those people can't vote. This has implications in hiring and employees' rights, housing, and any other aspect of life that is regulated by state government.
Montana's constitution contains a provision restoring all civil rights to those convicted of crimes once the sentence is served. So long as there are no federal laws in place removing those rights, once your sentence is served, your rights are restored. The only people in Montana who cannot vote are those who are incarcerated on election day.
Article II, Section 28 of the Montana Constitution states that "laws for the punishment of crime shall be founded on the principles of prevention, reformation, public safety, and restitution for victims. Full rights are restored by termination of state supervision for any offense against the state."