How does someone get on the ballot in New Hampshire? What is the official date of the 2020 primary? When do voters have to decide what party's primary they plan to vote in?

We'll answer these questions and more in an ongoing series of explainers about the New Hampshire primary and how it works, inspired by questions we received from our audience. Check back for more in the months ahead. And if you have a question you’d like us to help answer, let us know here.