Thailand Election Commission's chairman Supachai Somcharoen holds a ballot during an event to promote voting at the next August 7 referendum over military-back draft constitution in Bangkok, Thailand, August 4, 2016. REUTERS/Chaiwat Subprasom

Thailand Election Commission’s chairman Supachai Somcharoen holds a ballot during an event to promote voting at the next August 7 referendum over military-back draft constitution in Bangkok, Thailand, August 4, 2016. REUTERS/Chaiwat Subprasom

Thailand Election Commission's chairman Supachai Somcharoen holds a ballot during an event to promote voting at the next August 7 referendum over military-back draft constitution in Bangkok, Thailand, August 4, 2016. REUTERS/Chaiwat Subprasom

August 4, 2016 2:34 AM (UTC+8)