Gareth Bale (L) scored four in Real Madrid's 10-2 win. AP

MADRID, SPAIN - NOVEMBER 29 Christmas lighting illuminates crowds visiting the Christmas market in Mayor square on November 29, 2015 in Madrid, Spain. LED lighting is switched on in the city center during the Spanish Christmas season which stretches from November 27 until the Christian Epiphany festival on January 5 known as ''Reyes Magos''. (Photo by Denis Doyle/Getty Images)

People wait for the start of a campaign rally of Ciudadanos party in Madrid. AP

Spain's Prime Minister and right wing Popular Party candidate Mariano Rajoy gives a speech during a campaign rally at Las Rozas bullring, near Madrid. AP

Afghan security personnel carry a wounded man at the site of an attack on the Spanish embassy compound in Kabul. AFP

A protester holds up a placard as he demonstrates during a rally held the day before the start of the Paris Climate Change Summit in Madrid, Spain, November 29, 2015. The placard reads "The thermometer of the life, No more CO2" . REUTERS/Andrea Comas - RTX1WCYU

A protester holds up a placard as he demonstrates during a rally held the day before the start of the Paris Climate Change Summit in Madrid, Spain, November 29, 2015. The placard reads "The thermometer of the life, No more CO2" . REUTERS/Andrea Comas - RTX1WCYU

Luis Suarez and Neymar were unstoppable against Real Madrid. AFP

Barcelona's players acknowledge the crowd their win over Real Madrid. AFP