Pope Francis has chosen 21 new cardinals in a move that once again shows his determination to reshape the group of churchmen who will elect his successor.

ROME — Pope Francis named 21 new cardinals Sunday, significantly increasing the size of the College of Cardinals and further cementing his mark on the group of prelates who will one day elect his successor.

When Pope Francis appoints new Catholic cardinals, as he did on Sunday, the move is often described as the pontiff pushing to influence the group that one day will select his successor. But while Francis,