 Immigrants already working in Novosibirsk Oblast have to leave after the next three months by the time the ban takes effect in December 2016.According to a 2012 survey 24.9% of the population of Novosibirsk Oblast adheres to the Russian Orthodox Church, 5% are unaffiliated generic Christians, 1% of the population adheres to the Slavic native faith (Rodnovery), and 1% to Islam.In addition, 32% of the population declares to be "spiritual but not religious", 25% is atheist, and 11.1% follows other religions or did not give an answer to the question.