Why do policians don't keep their promises?

Politicians may not keep their promises due to a variety of factors, including changing political landscapes, pressure from interest groups, and the complexities of governance that can complicate implementation. Additionally, some promises may be overly ambitious or unrealistic, leading to difficulties in fulfilling them once in office. Voter expectations and the need to compromise on certain issues can also lead to situations where promises are not fully realized. Ultimately, the interplay of these factors can result in a gap between political rhetoric and actual policy outcomes.