Unwell Cardinals voting from their rooms
If any cardinals are too ill to be in the chapel, the three infirmarii visit them with a tray of ballots and a sealed box (previously shown to be empty, then locked with the key placed on the altar). The top of the box has a slit where the folded ballots can be inserted. Once the votes are cast, the infirmarii bring the box back to the chapel, where it is opened in front of the electors. The votes are counted and added to those already in the main chalice.
The Count
After all votes have been cast, the first scrutineer shakes the chalice to mix the ballots. The last scrutineer then counts them one by one, transferring them into a second, empty container. If the number of ballots doesn’t match the number of voters, all ballots are burned and a new vote is held immediately. If the count is correct, the ballots are opened and read.
The three scrutineers sit at a table before the altar. The first reads the name written on a ballot and passes it to the second, who confirms the name and hands it to the third, who reads it aloud for everyone to hear and records the vote. If two ballots appear to be written by the same person and bear the same name, they count as one vote. If they show different names, both are invalid, though the overall vote remains valid.
Once all ballots have been read and the votes tallied, the final scrutineer pierces each ballot with a needle through the word Eligo and threads them together with string. The ends of the string are tied in a knot, and the ballots are stored for safekeeping.