Every four years, our country holds a general election to decide who will be our next president. Before that happens, though, each party must choose its candidate through primary elections.

But our system of primaries can be a bit confusing. There's primaries and caucuses, open and closed primaries, contested and brokered conventions — it's hard to keep up.

Our latest video is a quick primer on the upcoming primaries, containing the most important things you need to know based on the most frequently asked questions.