This year marked the first time in the history of British politics that televised debates were broadcast on prime time television. Before the debates, the battle for prime minister was primarily a two-horse race between Prime Minister Gordon Brown and Opposition Leader David Cameron. But Liberal Democrats Nick Clegg's charasmatic performance won over the mainstream media and British audiences, pushing the Lib Dems into serious election condenders.
Almost a fifth of voters switched allegiances as a result of the televised leaders' debates, according to a poll. That could set up the UK for a hung parliament.