Why are by-elections called; what myths and misconceptions surround them; and how much do they shed light on the national political picture? I was grateful to be joined by Marc Collinson for this episode - lecturer in contemporary politics and history at Bangor University - to tackle these questions and many more. Hope you enjoy the discussion!  Recommendations: Chris (Lord) Rennard, Winning Here: My Campaigning Life: Memoirs Volume 1 (2018).David Butler, 'By-Elections and their Interpretation', Chris Cook and John Ramsden (eds), By-Elections in British Politics (1973): 1-13.Peter Sloman, '"Take Power - Vote Liberal": Jeremy Thorpe, the 1974 Liberal revival, and the politics of 1970s Britain', English Historical Review, 137 (2022): 1462–1492.T.G. Otte and Paul Readman (eds), By-elections in British Politics, 1832-1914 (2013).