A miner leaves a voting booth at a polling station during the presidential election at Kalinin coal mine in Donetsk February 7, 2010. Ukrainians voted on Sunday for a new president in a run-off between Prime Minister Yulia Tymoshenko and opposition leader Viktor Yanukovich which could bring a new bout of instability to the country. REUTERS/Vladislav Belokryl (UKRAINE - Tags: POLITICS ELECTIONS ENERGY)