SPELSBURY, ENGLAND - MAY 07:  Prime Minister David Cameron and his wife Samantha pass demonstrators as they leave a polling station after casting their vote in the general election on May 6, 2015 in Spelsbury, England. The United Kingdom has gone to the polls to vote for a new government in one of the most closely fought General Elections in recent history. With the result too close to call it is anticipated that there will be no overall clear majority winner and a coalition government will have to be formed once again.  (Photo by Peter Macdiarmid/Getty Images)