814.5 million: the number of Indian citizens above the age of 18 who are eligible to vote in this election. That is 2.6 times the population of the US in 2012. It is also 8 million more than the combined registered voters in the last elections in the six largest democracies after India (US, Indonesia, Brazil, Russia, Japan, and Bangladesh).
Source: How India Lives, a company founded by journalists, which seeks to increase the access and search of public data in India. More statistics on the largest election in history here.