After Italy announced that the two marines wont  return to India in order to face trials, the People of India have started questioning the Supreme Court’s Decision to allow the two Italian Marines to vote. The simple argument is that the MArines could have easily votes through Postal Ballot which is legal according to Italian Constitution.
It is very common for countries to allow their citizens abroad to vote by post or at their overseas missions, embassies or high commissions. Ever heard of expatriates having to travel back to their home countries to renew their passports or to get new passports for their newborns?
After doing a bit research, we found the following information about the Right to Postal Ballot in Italy.
Italian citizens living outside of Italy have always had the De Jure right to vote in all referendums and elections being held in Italy (provided they had registered their residence abroad with their relevant consulate). However until late 2001, any citizen wishing to vote, was required to physically return to the city or town in Italy where he or she was registered on the electoral roll. The only exception to this rule was for the Italian elections to the european parliament in which voters could cast their ballot at their nearest consulate but only if they had their residence in one of the other 14 EU countries.
After numerous years of petitioning and fierce debate, the Italian government, in late 2001, finally passed a law allowing Italian citizens living abroad to vote in elections in Italy by postal ballot. The change was the result of a thirty-year struggle to recognize the rights and special interests of Italians who have migrated abroad but retained their Italian identity.Italians wishing to excise this right must first register their residence abroad with their relevant consulate.