
If they do like someone, the name is passed to the Pope. If they do not like anyone, the Apostalic Nuncio will need to select another three candidates.
The Congress of Bishops in Rome will look at the three candidates and determine who, if any, should be selected as the new bishop. He then passes the three names to the Congress of Bishops in Rome. He reviews the names on the list sent by the bishops, and after performing a series of interviews and research, chooses three candidates from that list. The Apostolic Nuncio is the ambassador to Rome for your country. These candidates are put on an undisclosed list and sent to the Apostalic Nuncio.
Local bishops select priests from the area and form a list of potential candidates who they believe to be capable of performing the duties of a bishop.
If you are chosen, however, you will probably hear the news within a few months after the position opened up. The initial selection of candidates is made by local bishops from neighboring dioceses, and this initial selection must go through various channels before the new bishop is chosen. Unfortunately, you cannot apply or “run” to become a bishop.