All experts have their own list of Papal potentials, but looking at prediction markets -- where prognosticators put their money where their miter is -- we get a better idea of who the top candidates might be.
Cardinal Angelo Scola celebrates Cardinal Carlo Maria Martini funeral in Milan's Duomo cathedral on September 3, 2012 in Milan, Italy. Thousands payed their last respects to Cardinal Martini who died 85 years old on September 01. (Photo by Pier Marco Tacca/Getty Images)
Cardinal Marc Ouellet holds a mass in celebration of The Pilgrimage of the Holy Robe at the Cathedral of St Peter on April 13, 2012 in Trier, Germany. The Pilgrimage of the Holy Robe runs from April 13 to May 13, during which hundreds of thousands pilgrims are expected to view the Holy Robe. The robe, said to have been worn by Jesus Christ leading up to his crucifixion, is housed by the cathedral and rarely displayed for public viewing. (Photo by Ralph Orlowski/Getty Images)
Cardinal Angelo Bagnasco attends the ''L'emergenza educativa'' book presentation during the 2010 Turin International Book Fair on May 14, 2010 in Turin, Italy. (Photo by Valerio Pennicino/Getty Images)
Cardinal Leonardo Sandri (C) attends the Epiphany Mass at the St. Peters Basilica held by Pope Benedict XVI on January 6, 2012 in Vatican City, Vatican. During the Angelus blessing the Pontiff annonced the nomination of new cardinals on Saturday, 18 February. The list of new cardinals who will receive the red hat in the fourth consistory of his pontificate includes: Archbishop of New York Timothy Dolan, Archbishop of Berlin Rainer Maria Woelki, Archbishop of Toronto Thomas C. Collins and the bishop of Hong Kong John Tong. (Photo by Franco Origlia/Getty Images)
Sao Paulo's Cardinal Claudio Hummes, is seen during a mass dedicated to Pope John Paul II in Sao Paulo, Brazil, in this April 2, 2005 file photo. The 115 Roman Catholic cardinals who will choose the next pope may be keeping silent, but not the 7,000 residents of this small rural town nestled in the rolling green hills of southern Brazil. Ask just about anyone in this bucolic town who should be the next occupant of the Throne of St. Peter and the answer will invariably be Cardinal Claudio Hummes, whose family settled in this valley region more than a century ago. (AP Photo/Andre Penner)