The United Kingdom general election of 2017 is due to take place on Thursday 8 June 2017 to elect the 57th Parliament of the United Kingdom. In line with the Fixed-term Parliaments Act 2011, an election had not been due until Thursday 7 May 2020, but a call for a snap election by Prime Minister Theresa May received the necessary super-majority of two-thirds to allow it to proceed when it was supported by a vote of 522 to 13 of the 650 Members of Parliament in the House of Commons on 19 April 2017.
At general elections in the United Kingdom, voting takes place in single-member constituencies to elect Members of Parliament (MPs) to seats in the House of Commons, the lower house of the Parliament. There are 650 constituencies represented in the House, with an MP for each constituency. The leader of the party or coalition of parties that can command a majority of elected members will be invited by the British monarch to become the next Prime Minister. If the incumbent government wins a majority, a change in government will not be necessary. (Source: Wikipedia)