The number keeps growing but at the moment there are 22 noble or nutty (you pick) souls running for president – and the election is still 16 months away.
One of them, Bernie Sanders, says he is a socialist, whatever that means in 2015 America. Sanders certainly does, however, fit in to the great American populist tradition, so we thought this would be the perfect time to rerun our podcast on the origins of populism.

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