More teenagers can correctly identify Culture Club singer Boy George than Conservative leader Iain Duncan Smith.

A survey of secondary school children saw Tony Blair beat Robbie Williams with a 91 per cent recognition rate.

But Duncan Smith fail to match Boy George, George Bush or Ann Widdecombe on just 25 per cent.

Liberal Democrat leader Charles Kennedy, supposedly popular among young voters, scored even lower on 18 per cent.

But more worrying for all leaders was that only a fifth of those eligible to vote in 2005 said they were "absolutely certain" they would.