While that law is new, many weren't written with the digital age in mind and there's sometimes a lack of clarity regarding ballot selfies. NBC reports that Iowa, Montana, Michigan, New York, Nevada, Pennsylvania, South Dakota, Texas, Wisconsin, and 17 other states don't currently allow ballot selfies. A similar map put together by the Associated Press and USA Today says many of those same states, including Montana and Michigan, do allow selfies.
Meanwhile, things are fluid. The New Hampshire ruling came through in September and on Oct. 24 a Colorado state senator filed a federal lawsuit against the state of Colorado for banning ballot selfies. In New York, where ballot selfies remain illegal, the law was challenged recently and upheld. The judge wrote, in a 16-page decision, that changes this close to the election would be "a recipe for delays and a disorderly election"