Indonesia's presidential candidate for the upcoming general election Joko Widodo takes pictures with his supporters during his first campaign rally at a stadium in Serang, Banten province, Indonesia, March 24, 2019. REUTERS/Willy Kurniawan

Indonesia's presidential candidate Joko Widodo waves to supporters as he arrives to his first campaign rally at a stadium in Serang, Banten province, Indonesia, March 24, 2019. REUTERS/Willy Kurniawan

Indonesia's presidential candidate Joko Widodo greets his supporters during his first campaign rally at a stadium in Serang, Banten province, Indonesia, March 24, 2019. REUTERS/Willy Kurniawan

Indonesia's presidential candidate Joko Widodo takes pictures with his supporters during his first campaign rally at a stadium in Serang, Banten province, Indonesia, March 24, 2019. REUTERS/Willy Kurniawan

A woman dances as she attends a campaign rally of Indonesia's presidential candidate for the upcoming general election Joko Widodo at a stadium in Serang, Banten province, Indonesia, March 24, 2019. REUTERS/Willy Kurniawan

Party flags are seen during a campaign rally of Indonesia's presidential candidate Joko Widodo at a stadium in Serang, Banten province, Indonesia, March 24, 2019. REUTERS/Willy Kurniawan