Question Of Who Might Succeed Pope Francis To Loom Over Cardinals' Gathering

Roman Catholic cardinals from around the world gather for events at the Vatican starting this weekend that could amount to a dress rehearsal for an eventual conclave to choose a successor to Pope Francis after he dies or resigns.

On Saturday Francis will induct 20 prelates into the College of Cardinals, the exclusive group whose members serve as the pope's top advisors and administrators at the Vatican and around the globe.

Sixteen of the newcomers are under 80 years old and thus join the even more exclusive inner sanctum known as cardinal electors, eligible to enter a secret conclave to choose the next pope from among themselves.