Indian news website Scroll.in and social photo-sharing application Instagram commissioned 15 photographers to cover the general election. Here's a selection of some of the enduring images from the campaign trail. This photo by Ravi Mishra shows supporters engulfed in a dust storm as the helicopter of the opposition BJP's PM candidate Narendra Modi takes off after a public meeting near Varanasi.
The photographers travelled across 15 states in the past few weeks and took 360 pictures. This photo by Ravi S Sahani shows Arvind Kejriwal, the Aam Aadmi Party candidate from Varanasi, speaking at a public meeting.
All the photos were taken on mobile phones. Soumya Sankar Bose took this photograph of a Trinamool Congress Party supporter at an election rally wearing a Mamata Banerjee T-shirt.
This photo by Shiv shows Bharatdas - or Bapu (father), as he prefers to be called - crossing a stream to reach the polling centre in Gujarat. Bharatdas, a Hindu priest, is the only voter in Banej village, located in the middle of the Gir forest, and the Election Commission sets up a special polling centre just for him at every election.
This photo by Ritesh Uttamchandani shows sleepy journalists before the start of an early morning press conference by the Telangana Pradesh Congress Committee in the southern state of Andhra Pradesh.
Indian elections are full of colour and parties often bring in supporters to give music or dance performances at campaign rallies to attract voters. This photo by Harsha Vadlamani shows Naga Durga, a school student and classical dancer, turning up dressed as a goddess at a Telangana Rastra Samithi public meeting in Nalgonda in Andhra Pradesh state.
More than 551 million voters have participated in the nine-phase marathon election. This photo by Arkadripta captures women voters waiting in line to cast their votes at a polling centre in the north-eastern state of Tripura.
The main contest in the election is between the ruling Congress party, led by Sonia Gandhi, and the BJP, led by Narendra Modi. In this photo, Ravi Choudhary captures Mrs Gandhi greeting supporters in Amethi where her son and Congress vice-president Rahul Gandhi is standing for election.
The Election Commission employs thousands of videographers to record activities at polling centres across the country. Here, Harsha Vadlamani captures Buddhaprakash Datta, a 16-year-old student, working in Bidar, Karnataka.
The BJP has dominated the campaign and exit polls suggest that its leader Narendra Modi is on course to win the general election. This photo by Arkadripta Chakraborty shows school students with musical instruments waiting to greet Mr Modi at the Kakoijana airfield in the north-eastern state of Assam.
The north-eastern state of Tripura is ruled by communists and the Cuban revolutionary leader Che Guevara is a hero to many there. Arkadripta Chakraborty photographs a member of the Communist Party of India (Marxist) with a Che Guevara scarf.
