You can watch Tuesday's Cross Question in full again here.
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Iain Dale was joined by:
Siân Berry - Former co-leader of the Green Party of England and Wales - who is a current London Assembly member and a candidate for the next general election
Lord Robert Hayward - Conservative peer and polling analyst
Sarah Southern - Former adviser to David Cameron while he was Prime Minister - who is now a careers coach specialising in media and politics
John Rentoul - Chief political commentator for The Independent
Cross Question is live every Monday, Tuesday and Wednesday from 8pm. You can watch live on Global Player.