In the latest episode of Never Mind The Bar Charts, I talk with Duncan Brack, the closest thing the party has to an official historian, about the lessons for the Liberal Democrats from the last time that a Conservative government was defeated.

A key part of that was cross-party cooperation so we dive into what then party leader Paddy Ashdown's plans were, what worked, what didn't work and what lessons apply to this Parliament.

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• Lessons from the Ashdown-Blair ‘Project’ - Duncan Brack's book chapter on the topic.

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