More that 814 million voters, including over 23 million in the age group of 18-19 years, are exercising their franchise in the world's largest democracy where polls are being held in nine phases up to May 12.

India has the third-largest number of Internet users at more than 238 million, with a majority of them youth. This includes over a 100 million people active on social media platforms including Facebook and Twitter.

Other tech firms are also using the online media to engage with voters. Tech giant Google revamped its election hub to include features such as Pledge to Vote campaign, a 'Google score' tool for politicians, search trend info-graphics, YouTube election playlists and Hangout details for users.

Social networking giant Facebook launched an election tracker and started a Facebook Talks series, at which political leaders including Aam Aadmi Party founder Arvind Kejriwal and RJD chief Lalu Prasad answered questions from users.

According to a study by IRIS Knowledge Foundation and the Internet and Mobile Association of India (IAMAI), there are 160 high-impact constituencies in India out of the total 543, which are likely to be influenced by social media during the general elections.

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