Primary Calendar, Delegate Tracker And What's At Stake In Each State

Republican primaries and caucuses extend through June 26. To win the nomination, a presidential candidate must secure 1,144 delegates, a simple majority of those available. The Republican National Committee designed the calendar and apportionment rules this year to slow the process down, so more states play a role. Here's a look at the primary calendar, what's happened so far, and the number of delegates awarded or at stake in each state.