He was elected in the Sistine Chapel of the Vatican.
Bishops that elect the pope are called cardinals.
The cardinals use paper ballots to elect a pope. There are no voting machines used.
2/3 of the eligible cardinals (under age 80) are needed to elect a pope.
The Sistine Chapel is where the Cardinals meet to elect a new Pope.
The College of Cardinals
The College of Cardinals elect the pope.
Cardinals elect Popes, but they are not necessarily bishops.
Yes, it took 4 ballots to elect Benedict - 2 days.
The Pope gets elected by the Cardinals not the people.
Of course, Benedict was a real pope, elected by the College of Cardinals in 2005 to replace John Paul II. However, Pope Benedict X was an anti-pope.
Pope Benedict XVI, the reigning pontiff at the time, resigned and the need to elect a new pope arose.
His Holiness Benedict XVI was, like the majority of his predecessors, elected by the college of cardinals (voting-age cardinals) in a papal conclave in 2005.