In the lead-up to the 2010 Myanmar general election, Thein Nyunt left the NLD to co-found the National Democratic Force, a new political party, with Khin Maung Swe.
[5] The NDF contested the 2010 election, but Thein Nyunt later resigned due to internal party funding problems and ran as an independent.
[6] In advance of the 2020 Myanmar general election, Thein Nyunt formed an alliance with the military-backed Union Solidarity and Development Party (USDP).
[7] The USDP pledged not to contest the Thingyangyun Township seat to improve Thein Nyunt's odds of winning the race.
[7] Thein Nyunt's son, Nay Aung, a co-founder of the NNDP, disavowed his father's military alliance, and reported the incident to the Union Election Commission.