In 2014, During Loksabha Election, when BJP winning everywhere only In Tamilnadu & Bengal managed to restricted BJP to win.. It's proved how popular Jaya was in Tamil & Mamata in Bengal.
if I'm not wrong AIADMK won 37 out of 39 seats & Tmc won 34 out of 42 seats in 2014.
correct me if I'm wrong!
edit:
Thanks Bishnu bro for point out the correct stat!