Okay, so lets say that final round is ending on a map, someone decides to speed things up by casting a map vote for Song Be e.g..
Now that map vote fails and the round ends how it usually does, but when the vote screen for the next map opens up, Song Be has all the ''yes'' votes from the previous map vote that vent off during the round.
So basically, if someone feels like playing Song Be or any other as a next map, there is a fair chance that the map will be played, because it will have +20 ''yes'' votes for it.
Now that map vote fails and the round ends how it usually does, but when the vote screen for the next map opens up, Song Be has all the ''yes'' votes from the previous map vote that vent off during the round.
So basically, if someone feels like playing Song Be or any other as a next map, there is a fair chance that the map will be played, because it will have +20 ''yes'' votes for it.