Celebs encourage young Americans to vote

Christina Aguilera, Sean "P Diddy" Combs and Drew Barrymore are all making an appearance on Oprah Winfrey's chat show to urge young people to vote.

The stars have all been campaigning separately with the aim of getting the US public to become more aware of the political process and vote in November's presidential election.

Winfrey is uniting the three with a "voting party" she is hosting on her chat show. The programme, aimed at encouraging voter registration, is scheduled to air in America on Tuesday.