Nearly 10 million people tuned in to watch the three men who want to become Prime Minister take part in an historic TV debate on Thursday.
Prime Minister Gordon Brown represented the Labour party, David Cameron the Conservatives, and Nick Clegg represented the Liberal Democrats.
This sort of live political TV debate happens all the time in America, but it's the first time in the UK.
It took place because there's a General Election on 6 May this year.
The debate lasted for an hour and a half, and the three men got to say what their parties' ideas are on important subjects like crime, money and immigration.
Opinion polls taken after the event showed that lots of people thought Liberal Democrat leader Nick Clegg had done the best.