March–April 1605 papal conclave

The March–April 1605 papal conclave was convened on the death of Pope Clement VIII and ended with the election of Cardinal Alessandro Ottaviano de' Medici as Pope Leo XI. It was the first of two papal conclaves in 1605; Leo died on 27 April 1605, twenty-six days after he was elected. The conclave was dominated by conflict over whether Cesare Baronius should be elected pope, and Philip III of Spain excluded both Baronius and the eventually successful candidate, Medici.