Guide to the presidential primaries

Last updated March 8, 2016

Over the next several months, Democrats and Republicans will select their parties' presidential nominees through a series of state-by-state primaries and caucuses. Here's a regularly updated guide to the process — how it works, where it came from, and why it matters.

Voter ID laws, explained Who actually votes? Brokered conventions, explained The wacky primaries schedule Scandal in 1968 The primaries process, explained Iowa caucuses, explained