In the coming months you're going to see a lot more political adverts across TV, radio, and social media. But how much do we know about what really works, and what doesn't?
Matt is joined by Mark Lucas, a British ad man who has made films in 80 countries, and David Brookman, professor of political science at the University of California, Berkeley.
Plus: Columnists India Knight and James Marriott discuss Theresa May's decision not to stand at the next election, JK Rowling being reported to the police, and whether James can survive without a mobile phone.
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