Liberal Democrat party leader <a gi-track='captionPersonalityLinkClicked' href=/galleries/search?phrase=Nick+Clegg&family=editorial&specificpeople=579276 ng-click='$event.stopPropagation()'>Nick Clegg</a> smiles during the third and final leaders' debate, at the University of Birmingham, April 29, 2010 in Birmingham, England. The debate is focusing on the economy ahead of next week's general election which is set to be one of the most closely fought political contests in recent times.