MADRID, SPAIN - DECEMBER 21:  Spanish Prime Minister and Popular Party (PP) leader, Mariano Rajoy (C) waves his hand as he gives a speech at his party headquarters&#039;  balcony after his party won the most votes of the General Elections during a public meeting with supporters in Madrid, Spain on December 21, 2015. Spanish citizens went to the polls on 20th of December 2015 to vote for 350 members of the parliament and 208 senators. Popular Party won the elections but failed to reach overall majority. Burak Akbulut / Anadolu Agency