Later in the mid-2013, Tankhun Jitt-itsara, a Democrat candidate, defeated Yuranunt Pamornmontri, a Pheu Thai candidate, in the Don Mueang by-election to replace the former MP Karun Hosakul, who had been disqualified by the Election Commission of Thailand (ECT). It was the Democrat Party's first victory in the district in almost 40 years.
