Should politicians be legally accountable for their manifesto policies?

Why is it not a crime to break manifesto promises? This seems a simple way of making election manifestos genuinely meaningful documents - and also protecting the democratic process. Some allowance could be made for changing situations once power has been won, but why aren't party leaders individually and criminally responsible for broken guarantees. Thoughts?Become a supporter of this podcast: https://www.spreaker.com/podcast/mark-and-pete--1245374/support.Supporters get updates on new projects and hot takes on the latest news plus Mark and Pete Extra  in depth commentary episodes and Mark and Pete vs AI  comedy episodes. All right here in this podcast feed.  Thank you for your support, welcome to the community.