Earlier today we looked at New Hampshire's Voter ID law and the possible impacts it may have on the Presidential Primary, early next month.
While the law has been on the books for more than three years, this year's primary will be the first in which the law is in full effect.
Many local election officials, as well as voter rights groups like the ACLU and League of Women Voters, are preparing for that day, when many first-time or infrequent voters come to the polls.
Some critics say laws like New Hampshire’s suppress votes, but advocates argue they’re necessary to prevent voter fraud.
Want a quick rundown of how the law works? Look no further than our handy guide, below.