MADRID, SPAIN - DECEMBER 20: Podemos (We Can) leader Pablo Iglesias (C) and other party member acknowledge their supporters after learning the final general elections results at Hotel Eurobuilding on December 20, 2015 in Madrid, Spain. Spaniards went to the polls today to vote for 350 members of the parliament and 208 senators. For the first time since 1982, the two traditional Spanish political parties, right-wing Partido Popular (People's Party) and centre-left wing Partido Socialista Obrero Espanol PSOE (Spanish Socialist Workers' Party), held a tight election race with two new contenders, Ciudadanos (Citizens) and Podemos (We Can) attracting right-leaning and left-leaning voters respectively. (Photo by Pablo Blazquez Dominguez/Getty Images)

MADRID, SPAIN - DECEMBER 20:  Podemos (We Can) leader Pablo Iglesias (C) and other party member acknowledge their supporters after learning the final general elections results at Hotel Eurobuilding on December 20, 2015 in Madrid, Spain. Spaniards went to the polls today to vote for 350 members of the parliament and 208 senators. For the first time since 1982, the two traditional Spanish political parties, right-wing Partido Popular (People's Party) and centre-left wing Partido Socialista Obrero Espanol PSOE (Spanish Socialist Workers' Party), held a tight election race with two new contenders, Ciudadanos (Citizens) and Podemos (We Can) attracting right-leaning and left-leaning voters respectively.  (Photo by Pablo Blazquez Dominguez/Getty Images)