From the traffic-clogged streets of Jakarta to the tropical beaches of Bali and the volcanic islands of Java, more than 192 million Indonesian voters will stop work on Wednesday to vote in the world’s biggest single-day election.

The bitterly contested presidential and parliamentary poll between Joko Widodo, the incumbent President and his rival Prabowo Subianto, a former military general, will require over 800,000 voting stations spanning the Southeast Asian archipelago of some 17,000 islands.

The combination of the direct presidential vote with a general election has produced a mammoth logistical operation in the world’s biggest Muslim-majority nation – the public must choose between 245,000 candidates within the space of just eight hours.

After a series of suicide bombings which have targetted public gatherings in recent years, security will be a top priority. Nearly 350,000 police and military personnel will join 1.6 million paramilitary officers to ensure public safety.