Labour members could be 'unstoppable machine'published at 13:18 British Summer Time 21 July 2016
The World at One
BBC Radio 4
Paul Mason, once of the BBC's Newsnight, is a Corbyn supporter and says more people have applied to join the Labour Party in the last two weeks than are actually members of the Conservative Party.
The growth in membership can transform the situation on the ground - in workplaces, he says. He says it could become an "unstoppable machine" to win elections.
He says he believes Mr Corbyn is the right leader but adds that if challenger Owen Smith wins the leadership, he will continue to advocate "a social movement" within the Labour Party.
On Mr Corbyn's PMQs performances, Mr Mason says ordinary people ask "who stands up for me?" - unlike the media which are obsessed with the "theatre of PMQs".