The world’s largest single exercise of the democratic franchise will take place over a staggering 37 days in nine “phases,” some a week apart, from April 7 to May 12. Some 814 million eligible voters will elect, for the 16th time, a new parliament and government, casting their ballots at more than 930,000 polling stations – after choosing from an estimated 15,000 candidates belonging to more than 500 political parties.