Here are some of the defining images they captured.
Supporters cower as Narendra Modi's departing helicopter creates a dust cloud at a public meet in Varanasi, Uttar Pradesh. Photo by @ravimishraindia
Residents of Sangroor, Punjab, demonstrate their support for the Aam Aadmi Party as they arrive for a public meet by party leader Arvind Kejriwal. Photo by @baldie_ak
Strong winds upend chairs set up for Congress president Sonia Gandhi's election campaign address in Amethi. Photo by @Anand Singh
A group of men from Dhubri, Assam, climb an abandoned aircraft ramp outside Guwahati Airport as they wait for the arrival of their relatives to cast their votes. Photo by@Arkadripta1
Voters queue up in the Baba Nagri area of Kangan, approximately 50 km from Srinagar. Photo by @shahjaveed
Voters outside a pooling booth in Asharambari, Tripura. Photo by @Arkadripta1
A worker at a press in Ahmedabad dries long strips of fabric printed with Indian National Congress symbols.
Yesappa Dange proceeds to cast his vote after helping his visually impaired father, Samuel, in Bidar, Karnataka. Photo by @harshavadlamani
An election official goes through documents in a makeshift storage room for Electronic Voting Machines in a college in Bhagalpur, Bihar. Photo by @atishp
A celebrity displays his inked finger outside a polling booth in Mumbai. Photo by @riteshuttamchandani
Forty-year-old Samir Mukherjee begins to pack up his sound system at the end of a rally by Trinamool Congress chief Mamata Banerjee in Sonarpore. Photo by @soumyasankarbose
Bharatdas Bapu, a priest and the only voter in Banej, Gir, crosses the river Gadh Ganga or Choti Ganga to reach the polling booth. Photo by @baldie_ak
Social activist Jharna Achariya offers flowers at the grave of a comrade in Lalgarh. Maoist activity in the area has prevent people here voting in elections for much of the past decade. Photo by @soumyasankarbose
Shyam Saran Negi outside the polling booth in Kalpa village, Himachal Pradesh. The 97-year-old former schoolteacherwas the first to vote in independent Indian's first election in 1951. Photo by @arkadripta1