Reducing the fraud of Voters

Yes by introducing the blockchain system in the voting system , people who always take advantage of the system by making double votes for their favourite candidates cannot no do so. This is because the blockchain will have the data and information of people who have already voted hence if that same person is trying to vote it will be rejected.

Use for Illegal Works

Yes as bad people have discovered that they can actually make anonymous transactions without being found out they have used the blockchain for bad things.