I think they will do at later stage,already they are doubling Trichy to Thanjavur.
I just want to see Erode-Karur-Trichy and Salem-Karur-Dindigul electrification and work is going in a good and decent pace,polls have been erected in many places and they are concentrating mainly in Erode-Karur-Trichy route first.
Dharmapuri to Bangalore line is also necessary, but doubling is very difficult in this region,because its hilly area.
Once...
more... these routes get electrified Tamilnadu electrification of railways will reach almost 80 to 90 percent