The problem Decentralized Elections solves

Electronic voting machines (EVMs) were supposed to be the cure for the malady of booth-capturing in elections in India, but in the present form of use they have only worsened the problems. Moreover, EVMs also do not meet the legal requirements set out in the Information Technology Act, 2000.
EVMs, as they are being used by the Election Commission of India (ECI), create worries about the very legitimacy of the choice of governments through elections based on them, and raise questions about whether the ECI has become partisan in its defence of EVMs.
But in our case any vote given is written on a blockchain and cannot be altered once casted , esuring a fair means of conduction of elections.

Challenges I ran into

Writing a custom contract in solidity to make it suit to the election scenario , setting up block chain in ganache and ensuring that a candidate can vote only once was a challenging task.