On October 21, a New Hampshire state trial court enjoined the 2017 law that increased requirements for voters to prove their residence. League of Women Voters of NH v Gardner, 2226-2017-cv-433. Here is the 24-page opinion.
The 2017 law required voters who were registering before 30 days before an election to bring in documents proving they live at the address they claim to live. It said if voters were registering within 30 days of an election, they had to promise to bring in such documents shortly after the election. The decision outlines the practical problems associated with this idea. This is an ACLU case.