Under STV, each elector (voter) casts a single vote in a district election that elects multiple winners. Each elector marks their ballot for the most preferred candidate and also marks back-up preferences.

How is single transferable vote calculated?

Each winner's surplus votes transfer to other candidates according to their remaining preferences, using a formula (s/t)*p, where s is a number of surplus votes to be transferred, t is a total number of transferable votes (that have a second preference) and p is a number of second preferences for the given candidate.

Is president elected by single transferable vote?

Answer: As per Article 55(3) of the Constitution of India, the election of the President shall be held in accordance with the system of proportional representation by means of single transferable vote and the voting at such election shall be by secret ballot.