NHPR's State of Democracy app is sponsored in part by: The NH Primary Student Convention, January 4th-6th, 2016.
For most presidential candidates, the New Hampshire primary filing period is little more than a formality.
You show up at the State House. You bring $1,000 to cover the filing fee and as many supporters as you can round up. You sign a form affirming that you’re a registered member of your chosen political party, and you’re essentially good to go.
For Bernie Sanders, that last part has made things slightly more complicated.