David Cameron Visits The Queen To Request The Dissolution Of Parliament

LONDON, ENGLAND - MARCH 30: British Prime Minister David Cameron arrives for a private audience with Queen Elizabeth II at Buckingham Palace on March 30, 2015 in London, England. Campaigning in what is predicted to be Britain's closest national election in decades will start after Queen Elizabeth II dissolves Parliament today. (Photo by Anthony Devlin - WPA Pool/Getty Images)