Voters in the economically powerful region of Catalonia on Sunday punished the leader who made a referendum over breaking away from Spain a central plank of his campaign, seeing his party’s majority reduced by a dozen seats. Regional president Artur Mas called the early election as part of a power struggle with Prime Minister Mariano Rajoy regarding the size of Catalonia’s contribution to national coffers. But the quarrel over money turned into a test of Spain’s territorial integrity.
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