Voting is secret.   I think you can find out yourself by being a volunteer as an election agent.    The contesting parties would require a lot of election agents (volunteers) for polling days and those who attend rallies can register on the spot as an agent with the political parties or go to their party headquarters to register to volunteer.   During voting, volunteers from each contesting party would be present to watch over the process which is roughly as follows:.  

  In order to ensure secrecy, after the votes are cast, the boxes containing the voting slips will be collected and poured into a big bag/container where the ballots are then thoroughly mixed up by shuffling them over and over again, several times.   Then they will begin counting the votes by sorting the slips into respective party's votes. Every hundred slips will be bundled together so it is easier to count the number of votes for each party.   If there is a convincing win, normally the loser will accept the result, otherwise he may object and ask for a recount.   Each party can check if their votes are mixed up with their adversary's bundles to ensure their votes don't go to the wrong pile. After the election is over, and all the winners declared, the ballot papers with their boxes would be sent to the Supreme Court to be stored away for secrecy purposes in the safe vaults.   Usually if there are no objections over the counting, then 6 months later the voting slips are sent to the incinerator to be burnt in the presence of the political parties.   Thus nobody will know who votes for whom. 

The secrecy of votes is thus ensured.   Have no fear to vote whom you want to vote.