Dolan, the 63-year-old archbishop of New York, is an upbeat, affable defender of Catholic orthodoxy, and a well-known religious figure in the United States. He holds a job Pope John Paul II once called "archbishop of the capital of the world." His colleagues broke with protocol in 2010 and made him president of the US Conference of Catholic Bishops, instead of elevating the sitting vice president as expected.

And during the 2012 presidential election, Republicans and Democrats competed over which national political convention the cardinal would bless. He did both. But scholars question whether his charisma and experience are enough for a real shot at succeeding Benedict.