Economy of Tamil Nadu Main rail junctions in the state include Chennai, Coimbatore, Erode, Madurai, Salem, Tiruchirapalli and Tirunelveli . Chennai has a well-established Suburban Railway network, a Mass Rapid Transport System and is currently developing a Metro system, with its first underground stretch operational since May 2017. Tamil Nadu has a major international airport, Chennai International Airport, that is connected with 19 countries with more than 400 direct flights every day. Other international airports in Tamil Nadu include Coimbatore International Airport, Madurai International Airport and Tiruchirapalli International Airport. Chennai International Airport is currently the third largest airport in India after Mumbai and Delhi
1977 Indian general election in Tamil Nadu by supporting Charan Singh, which resulted in the appointment of two ADK cabinet members. While there were no members from Tamil Nadu in Morarji Desai's Administration, Charan Singh appointed two AIADMK members to his cabinet, making it the first time a non-Congress Dravidian Party member making it to the council of ministers at the national level. 1977 Indian general election in Tamil Nadu The Indian general election, 1977 polls in Tamil Nadu were held for 39 seats in the state. The result was a big victory for Indian National Congress under Indira Gandhi and its allies Anna Dravida Munnetra Kazhagam