The incident took place in Phoola village on Monday night.
Lallan Singh was shot at by some unidentified men when he was returning home after meeting newly-elected village pradhan Suraj Prasad around 10 pm, the police said.
Singh was rushed to a community health centre in Tiloi, where he was given primary treatment and then doctors there referred him to a hospital in Lucknow.
However, the lawyer succumbed to injuries on the way to Lucknow.
Circle Officer Anand Kumar said the body has been sent for postmortem and a hunt is on to nab the accused persons.