** CORRECTS TO INCLUDE DATE **Britain's Liberal Democrat leader Nick Clegg, center right, talks to members of the Infant, Mother and Pre School group during a general election campaign visit to the Community Church in Bristol, England Thursday April 22, 2010. Britain's second televised election debate Thursday could be a game-changer, with candidates, Labour's Prime Minister Gordon Brown, the Conservatives' David Cameron and the Liberal Democrats' Nick Clegg, dueling over foreign affairs at a time when the country is broke and voters are angry _ any mistake could tip the scales in this razor-sharp race. (AP Photo/Gareth Fuller, pool)