Voting started in Maharashtra for the 288-Assembly constituencies, while over 1.83 crore voters in BJP-ruled Haryana are to cast their votes to elect the 90-member legislative Assembly.
Facebook began sending notifications from the morning to its over 300 million users in India, saying "get information about voting and share that you've voted."
The social networking giant in April joined other social media companies in a voluntary code of ethics for the elections with the Election Commission of India (ECI).
It included measures like a dedicated communications channel for notice and take down after receiving valid legal order, processing of valid requests in the blackout period ahead of voting and voter education efforts.
"Facebook recently launched two new products in India to help people learn about issues they care about and engage with candidates and elected officials in meaningful ways," Facebook India Vice President and Managing Director Ajit Mohan said in a blog post.
"Candidate Connect" is designed to give voters accurate information and help people learn more about different candidates.
"Share You Voted" lets people share with friends that they've cast their ballots in the elections.
"The products have been customised, based on what we've learned from local research, including the community's desire to hear directly from their candidates," said Mohan.
Google has also introduced a series of steps to urge the netizens and first-time users in the country to register to vote in the country.
( With inputs from IANS )