Turncoats, opportunists … or just idealists whose bosses lost their way? 

Defecting to a new party is one of the momentous decisions an MP could ever make. Years of loyalties, backroom deals and deep friendships are lost in an instant. Patrick Baker speaks to MPs who have wrestled with the decision to switch party, to discover what it is really like. 

Shaun Woodward, who left William Hague’s Conservative party to join Blair’s New Labour in 1999, recalls the dirty tricks used try to prevent his defection and how the move precipitated a huge media storm.

Former Ipswich MP Dan Poulter, who defected from the Tories to Labour last April, explains how he lost faith in the Conservatives (just before an election) and solicited advice from those on the other side of the aisle, including veteran MP Jon Cruddas.

Helen Pidd, host of The Guardian’s Today in Focus podcast, was given special access to defector Christian Wakeford in Parliament, and witnessed first-hand the reaction from Tory MPs furious at his perceived betrayal after the Bury South MP crossed the floor to join Labour.

Brexit stalwart Douglas Carswell recounts his decision to join UKIP, which helped to pave the way for the EU referendum — while David Cameron’s former communications chief Craig Oliver sets out his strategy for spinning a subordination in the ranks.

And Libby Wiener, who spent twenty years as a political correspondent for ITV News, looks back at the Westminster drama of multiple defections. She explains how these rare events are becoming more common, in an era where voters’ own party allegiances are less secure.

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