Hungarians go to the polls on Sunday in a vote that could bring down long-serving Prime Minister Viktor Orbán and have significant repercussions for the rest of Europe, the US and Russia. Most polls favour Péter Magyar, who formed a grassroots party after splitting from the ruling Fidesz party, but the night before the vote Orbán was in defiant mood. "We are going to achieve such a victory that will surprise everyone, perhaps even ourselves," he told several thousand supporters in a small