Ah, but that's not the best bit. The best bit is what the local authorities were willing to do to bring an end to the papal election.

See, in 1270ish, the Pope wasn't just the head of the Western Church, but also the earthly ruler of a chunk of central Italy. So it was a problem that there was no one in charge. Local authorities in the town where the election was being held became increasingly impatient. First they locked the cardinals in the palace where the meetings were being held. Then they put them on bread and water rations. Finally they removed the roof of the palace. Finally the cardinals agreed to a compromise candidate and they were allowed to go home.