Francis’ successor will be selected by cardinals at the conclave that began on May 7. Cardinals, known as the “princes of the church,” rank just below the pope in the Roman Catholic Church; together, they are known as the College of Cardinals. When a pope dies, the college chooses a successor.

The papal conclave begins May 7. Here's how cardinals choose the next pope, what to expect and how secretive the process is.

Over 130 voting cardinals must decide whether to continue in the direction of Francis or elect a pope likely to choose a more traditional path.