From a pathetic poll showing - just two corporator seats out of 150 wards in the GHMC elections in December 2020 - the Congress seems to have made a big comeback, picking momentum to challenge the ruling BRS and possibly stopping a hat-trick by Chief Minister KCR in Telangana. NDTV's Uma Sudhir spoke to Telangana Congress chief Revanth Reddy on the campaign trail in Medchal, on the outskirts of Hyderabad.