Fergus Nicoll has travelled to Mr Modi’s constituency at Varanasi on the River Ganges in Uttar Pradesh. Prime Minister Modi promised to clean up the river after decades of pollution. Professor VN Mishra has strong words for the Prime Minister on what needs to be done to save the river and modernise an outdated sewerage system.

Outside the city, we meet the farmers for whom Modi has created a model village, complete with solar-powered street lights - and the farmers who are about to lose their fields to a big truck park.

There are hundreds of thousands of workers who have concluded that their best prospects lie abroad, most often in the Gulf. It is a mixed prospect, with the promise of money to send back home, but prolonged absences can bring great strain to families

Stephen Ryan speaks to Professor Irudaya Rajan, Centre for Development Studies in Trivandrum, the lawyer and writer Smitha Girish whose husband has lived in Dubai for the last 15 years, and VK Mathews, who set up his own business when he returned to India.

(Picture: Voters lined up at a polling station in Varanasi, India. Picture credit: Madanmohan Sharma)