The 1740 papal conclave (18 February – 17 August), convoked after the death of Pope Clement XII on 6 February 1740, was one of the longest conclaves since...

and later papal bulls; observance of the conclave varied until 1294, but all papal elections since have followed relatively similar conclave procedures...

Gregory X promulgated the papal bull Ubi periculum on 7 July 1274, during the Second Council of Lyon, establishing the papal conclave, whose rules were based...

A papal conclave was held from 19 to 21 June 1963 to elect a successor of John XXIII, who had died on 3 June 1963. The cardinal electors assembled in Rome...

The papal conclave lasting from 14 December 1830 to 2 February 1831 resulted in the election of Cardinal Bartolomeo Cappellari, who took the name Gregory...

A papal conclave took place from 25 to 28 October following the death of Pope Pius XII on 9 October 1958. On the eleventh ballot, the College of Cardinals...

The papal conclave held from 18 to 20 February 1878 saw the election of Vincenzo Pecci, who took the name Leo XIII as pope. Held after the death of Pius...

The papal conclave held from 2 to 6 February 1922 saw Cardinal Achille Ratti elected to succeed Benedict XV, who had died on 22 January 1922. It took fourteen...

The papal conclave held on 25 and 26 August 1978 was the first of the two held that year. It was convoked to elect a successor to Paul VI, who had died...

The papal conclave held from 24 February to 31 March 1829 to elect a successor to the recently deceased Leo XII resulted in the accession of Cardinal Francesco...