Britain's Prime Minister David Cameron (2nd R) and Mayor of London Boris Johnson (2nd L) speak with shoppers in Newark market, central England May 21, 2014. Cameron and Johnson travelled to Newark to ... more 
Britain's Prime Minister David Cameron (2nd R) and Mayor of London Boris Johnson (2nd L) speak with shoppers in Newark market, central England May 21, 2014. Cameron and Johnson travelled to Newark to campaign for next month's by-election. REUTERS/Stefan Rousseau/Pool (BRITAIN - Tags: POLITICS ELECTIONS) less 
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Reuters | Photo By POOL / REUTERS
Wed, May 21, 2014 8:25 AM EDT