New Hampshire voters may register through Election Day. Online registration is not permitted. Voters must present photo identification at the polls. If a voter is unable to present a valid form of identification, a poll worker will take a photo of the voter and attach it to an affidavit, which must be signed by the voter. Exceptions are provided for those who object to being photographed for religious reasons. In 2016, the outcome of the presidential election in New Hampshire was decided by only .37%. Your vote is valuable to the state and makes a difference!