According to Article 67 of the Constitution, the electoral laws must be in compliance with the principles of fair representation and administrative stability. Parliamentary elections are held every five years. Parliamentary elections and presidential elections are held together. Currently, a system of proportional representation with a national threshold of 7% is valid. Accordingly, political parties that cannot obtain more than 7% of valid votes throughout the country cannot win seat(s) in the Assembly. Parliamentary elections shall be held in accordance with the principles of a general and secret vote and open counting. The parliamentary election shall start on the first day of a period of 60 days before the voting date. An election ends when the Supreme Board of Election announces the results in the Official Gazette.