Dear Shaikh Saud,
Whenever elections are conducted, all business establishments, government services, semi-government services, etc., are closed under the provisions of the Negotiable Instruments Act. However, Essential Services are exempted from declaring a closed holiday. Does your company fall under the "essential services" category?
Whatever the legal position may be, employees have to be accommodating and reconcile themselves to the directions given by their employers. To protect their employment, some concessions need to be made. If you are required to forego your day off, then take a deep breath, have a glass of water, and move on.
It is not that one should not stand up for one's rights. However, while doing so, combative postures may not be conducive in the long run. So, on the date of voting, you may cast your vote and do your duties. Later, you may ask for compensatory off (CO) for working on the closed holiday. However, don't insist on it. If the authorities concerned turn down your application for the CO, accept it.
Thanks,
Dinesh Divekar