Indonesia heads to the polls on Wednesday in the largest single-day democratic election in the world, as voters face a choice for president between an everyman incumbent and his strongman ex-general challenger. Polls have been giving Mr Jokowi a double-digit lead, with a recent survey suggesting he might win by 20 percentage points. But there is anecdotal evidence that some Prabowo supporters are not declaring their real intentions, said Alexander Arifanto, a researcher at RSIS.