SHEFFIELD, ENGLAND - MAY 06: Liberal Democrat Leader Nick Clegg casts his vote with wife Miriam Gonzalez Durantez at Bents Green Methodist Church on May 6, 2010 in Sheffield, England.After 5 weeks of campaigning, including the first ever live televised  Leader�s Debates,  opinion polls suggest that the UK is facing the prospect of a hung parliament for the first time since 1974.  (Photo by Laurence Griffiths/Getty Images)