Eugenio Cardinal Pacelli dedicates French basilica in 1937

Cardinal Pacelli was elected to the highest position in the Catholic hierarchy. On the third ballot, with only one dissenting vote, a large crowd gathered in Saint Peter's Square to hear the announcement of the 26th successor in the direct line to Saint Peter, chosen by the College of Cardinals.

What was the number of dissenting votes during the election?

What significant title did Cardinal Pacelli hold after his election?