Members of clinical staff work at computers in the Accident and Emergency department of the 'Royal Albert Edward Infirmary' in Wigan, north west England on April 2, 2015. British Prime Minister David Cameron kicked off his re-election campaign Saturday, March 28, 2015, for May's tight poll by echoing his main rival with a new promise to improve the state-run National Health Service (NHS). Polling by Ipsos MORI indicates that the NHS, which provides across-the-board care for Britons and is mostly free, is the most important issue for voters. AFP PHOTO / OLI SCARFF (Photo credit should read OLI SCARFF/AFP/Getty Images)
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