CPI-M has put candidates from 13 seats while the Trinamool Congress has put up candidates at 18 constituencies.
Filing of nominations ended today but the last date of withdrawal is July 12. Results for the crucial hill poll will be declared on August 2 and the GTA formation would be completed by August 10.
GJM president Bimal Gurung has filed his papers from Tukvar, his native village in Darjeeling sub-division, while his wife Asha submitted her nomination for Darjeeling sadar seat.
Party general secretary Roshan Giri filed his papers from Sitong Latpanchar in Kurseong sub-division.
GTA has total 45 seats - 22 in Darjeeling sub-division, 10 in Kurseong and 13 in Kalimpong.