Thailand Election Commission's workers holds banners during an event to promote voting at the August 7 referendum on a new constitution, in Bangkok, Thailand

Thailand Election Commission's chairman Supachai Somcharoen holds a ballot during an event to promote voting at the August 7 referendum on a new constitution, in Bangkok, Thailand

Thailand Election Commission's chairman Supachai Somcharoen attends an event to promote voting at at the August 7 referendum on a new constitution, in Bangkok, Thailand

Thailand Election Commission's workers holds banners during an event to promote voting at at the August 7 referendum on a new constitution, in Bangkok, Thailand