The problem E-Vote solves

Easier,quicker manageable system.
Avoids duplication of votes.
Authenticating users using Aadhar Card Database.
Single step authentication via OTP.
Avoids manipulation of votes.
Cost effective compared to current ballot system.
More voter turnout due to digitalization.
Transparency in voting.
Promoting Digital India.
Encrypted votes of individuals ensure anonymity .
Not able to delete votes once casted as blockchain is immutable.

Challenges we ran into

To write appropriate and effective Smart Contract using Solidity.
To generate OTP for authentication purpose.
To access and store data in database w.r.t side chain.
Manage linking of pages in nodejs.