Fig.1 Beware the 'unhappy valley' of storytelling
I was introduced to this concept at the Open University Business School Residential for 'Creativity, Innovation & Change'. The thought is that in business - and I believe this applies to politics too - you can apply narrative but only take it so far. Case studies work, anecdotes snd short stories too but take care about how far you apply it before you. call on professional input.
Producing narrative drama for training I will plan a treatment then take this to a professional writer - people with credits for drama series or serials. Anything less can sink you into this 'unhappy valley'. This also applies to casting actors and using a director with a track record in drama. What you want is something creditable.