Election staff check an electronic voting machine (EVM) at a distribution centre ahead of the sixth phase of India's general election in Mumbai April 23, 2014. Around 815 million people have registered to vote in the world's biggest election - a number exceeding the population of Europe and a world record - and results of the mammoth exercise, which concludes on May 12, are due on May 16. REUTERS/Danish Siddiqui (INDIA - Tags: ELECTIONS POLITICS)