Popular Party candidate Mariano Rajoy waves to gleeful supporters in Madrid on Sunday. With his party winning a huge majority in the Spanish parliament, Mr. Rajoy is set to become the nation's next prime minister. (Associated Press)

Popular Party candidate Mariano Rajoy waves to gleeful supporters in Madrid on Sunday. With his party winning a huge majority in the Spanish parliament, Mr. Rajoy is set to become the nation's next prime minister. (Associated Press)