What is the legal basis for the establishment of municipalities and their elections?
The legal basis for the establishment of municipalities and their elections is Article 243ZA in the given context. This article ensures that the validity of any law relating to the delimitation of constituencies or the allotment of seats to such constituencies made or purporting to be made under it shall not be called into question in any court. Additionally, no election to any municipality can be challenged except by an election petition presented to a specific authority and in the manner provided for by or under any law made by the State Legislature.