You can't have the ability to verify who you voted for, because that would eliminate the secret ballot.
If there is an incentive to get to know who a individual person has voted for, then it would be with all parties.
And if you think there is just one party that is much stronger as compared to others. Then, it doesn't matter if you vote or not. They are just being nice by letting you vote.
also the secret ballet is very important to maintaining the fairness of elections.
Buying votes is a thing. If it's easy to verify that you voted for X party then it's very easy to sell your vote.