Every day all remaining players cast a vote for who should be lynched, i.e. eliminated from the game. Majority decides, and not lynching anyone is also an option. This is the Town's only opportunity to get rid of Mafia (at least in this game) but of course it can backfire just as much, which is why you'll always have arguments over Lynch on Day 1 vs No Lynch on Day 1, as Day 1 is always the day where there's the least information in circulation.