Tamil Nadu Legislative Assembly by-election, 2009–2010

By-elections to nine state assembly constituencies were held in Tamil Nadu, in four separate phases. Election for Thirumangalam was held on January 9 and for Bargur, Thondamuthur, Ilayankudi, Cumbum, and Srivaikuntam constituencies on August 18. Also, election took place for Vandavasi and Tiruchendur constituency on December 19, 2009 and finally for Pennagaram constituency on March 27, 2010. Dravida Munnetra Kazhagam (DMK) defeated All India Anna Dravida Munnetra Kazhagam (AIADMK) in Thirumangalam in the first phase and kept the winning momentum in the following general election.

Tamil Nadu Legislative Assembly by-election, 2009–2010

By-elections to nine state assembly constituencies were held in Tamil Nadu, in four separate phases. Election for Thirumangalam was held on January 9 and for Bargur, Thondamuthur, Ilayankudi, Cumbum, and Srivaikuntam constituencies on August 18. Also, election took place for Vandavasi and Tiruchendur constituency on December 19, 2009 and finally for Pennagaram constituency on March 27, 2010. Dravida Munnetra Kazhagam (DMK) defeated All India Anna Dravida Munnetra Kazhagam (AIADMK) in Thirumangalam in the first phase and kept the winning momentum in the following general election.