Maintaining good governance practices regarding ethics and transparency in Thailand's local governments is very challenging. The lack of ethics and transparency are due to the abuse of power and misconduct by local politicians and officials and loopholes in the rules and regulation. This mixed-method study was conducted in the northeastern municipalities of Thailand. The research found that the factors of accountability, persons and structure were significantly associated with good governance practices of ethics and transparency with correlation levels of 0.88, 0.88 and 0.81, respectively. In-depth interview results indicated that good governance practices in local governments were not improved, although the military had seized power in May 2014. During this time, the abuse of power, misconduct and allegations of fraud committed by local politicians and officials continued.