Actor Daniel Radcliffe has taken his first step to embark on a career in politics by signing up as the advisor to Britain's Liberal Democrats party, say reports.

Radcliffe had recently revealed his political allegiance, saying, 'I'll be voting Lib Dem, without a shadow of a doubt. (Party leader) Nick Clegg rang me and we had a good chat. He's seriously impressive.'

The 20-year-old star is set to help Clegg broaden the party's appeal, reports contactmusic.com.

'Nick called Daniel and asked for his support. He was only too happy to help and is planning to come out in support of the party and even campaign on behalf of the Lib Dems,' said a source.

'Nick is really hoping Daniel's support will be a long-term affiliation with the party as Nick knows how important it is to be in touch with the youth of today and Daniel is a perfect tool for that.

'Daniel is serious about his role within the party and has already begun mentioning the Lib Dems in high-profile interviews,' the source added.