In Turkey, Supreme Election Board has rejected opposition petitions to annul referendum on expanding President Recep Tayyip Erdogan's powers to turn the country into an executive presidency from the current parliamentary system. <br/><br/>According to reports, after complaints of vote-rigging, ten members of Turkey's top election authority decided against annulling the vote while only one member voted in favour. <br/><br/>The narrow 51- 49 percent referendum victory has led to protests in Istanbul and other cities over allegations of voting fraud. The unrest has focused on the board's earlier decision to allow ballots without an official stamp. <br/><br/>Under Turkey's election law, all ballots and the envelope they are placed are required to have an official stamp, a measure to prevent vote-stuffing.