In March 1991 a referendum was held on the issue of independence. This was somewhat controversial, as holding a referendum could be taken as signalling that Estonian independence would be established rather than "re"-established. There was some discussion about whether it was appropriate to allow the Russian immigrant minority to vote, or if this decision should be reserved exclusively for citizens of Estonia. In the end all major political parties backed the referendum, considering it most important to send a strong signal to the world. To further legitimise the vote, all residents of Estonia were allowed to participate. The result vindicated these decisions, as the referendum produced a strong endorsement for independence. Turnout was 82%, and 64% of all possible voters in the country backed independence, with only 17% against.