Nick Clegg, U.K. deputy prime minister and leader of the Liberal Democrats, exits his political party's bus during a visit to the proposed construction site of the Watford Health Campus in Watford, U.K., on Tuesday, March 31, 2015. Polls put the ruling Conservatives and the Labour opposition neck and neck, with neither on course to win enough votes for a parliamentary majority on May 7. Photographer: Matthew Lloyd/Bloomberg via Getty Images
