In short, lies to get elected and then they do what they want whatever the colour of the rosetteWhether they are called manifestos or contracts, the documents published by political parties ahead of an election are rather less substantial than their many pages would suggest. They are full of best-case scenarios, undetailed proposals and dubious costings, and it is hard to picture the impact each party would have on the UK if they followed through with their pitches.
It's all just gimmicks to gain power!