The cardinals -- at least, those under 80 years old -- vote for as long as it takes to elect Pope Francis' successor.

Catholic cardinals on Monday set May 7 as the start date for the conclave to elect Pope Francis’ successor, delaying the secret voting for two days so they can get to know one another better and find consensus on a candidate before they are sequestered in the Sistine Chapel.

The world's Catholic cardinals met on Monday for the first time after the funeral of Pope Francis to discuss a possible date to enter a secret conclave and elect the next leader of the global Church.