Politicians election promises legal?

Election fever is gripping quite a few countries for e.g. Kuwait & India.

India is a large nation with over a billion population. With elections ongoing, people have high hopes that the elected candidates will improve their living conditions and take the country towards progress.

It’s anything new to say the promises of the politicians take a back seat, once these politicians grab the seat. Priorities seem to take drastic change, and those promises are relegated to the back of the mind, till the electorate forgets about it.

I feel that once the candidate is elected, their election manifesto should be made into a legal document and to be abided by, should be mentioned in thier swearing oath.

Once it is a made a promissory note, the candidates will strive towards fulfilling the expectations of the electorate. There should be an amendment to the constitution to this effect.