Only Cardinals under the age of 80 are eligible to be part of the Papal Conclave that elects the next pope

1. Staring in 1970, resulting from a decree of Pope Paul VI, cardinals over the age of 80 when the papacy becomes vacant are not eligible to be part of the Papal Conclave that gathers to elect the next pope. Pope Paul VI also set the maximum number of cardinals that may vote to 120. This number has been changed several times prior to 1970.