Next week, American voters will cast their ballot for the highest office in the land, but why will they do it on a Tuesday?

The harrowing election season is almost over, and while it may not be rigged as Donald Trump claims, US elections aren’t decided by the popular vote alone

A vicious political battle is under way in the US Virgin Islands, complete with attack ads, legal proceedings and nine delegates at stake for the Republican party

Superdelegates play a key but controversial role in deciding a party’s presidential nominee. But what are they exactly? And how do candidates win their support?

The first day of March will have another name this year: Super Tuesday. But how high are the stakes, really?

The Guardian’s quick explainer on the New Hampshire primary on 9 February looks at what’s at stake in the Granite State for presidential candidates

The Guardian takes a look at the Hawkeye State’s small and intimate caucus voting processes , and why it differs from the traditional primary election

Foreign policy is suddenly dominating the 2016 presidential conversation. But where do the 2016 candidates stand on the great hawks and doves spectrum?