BIRMINGHAM, ENGLAND - MARCH 16: Nurses in the accident and emergency dept of Selly Oak Hospital work during a busy shift on March 16, 2010 in Birmingham, England. As the UK gears up for one of the most hotly contested general elections in recent history it is expected that that the economy, immigration, industry, the NHS and education are likely to form the basis of many of the debates. (Photo by Christopher Furlong/Getty Images)