Karnataka Chief Minister Siddaramaiah, fighting a tough battle to retain power in the state where no party has been re-elected for a second straight term in 33 years, described his chief rival, BS Yeddyurappa, as "mentally disturbed" for predicting a BJP victory. He also said there was "no doubt" that the Congress would return to power with over 120 seats in the 224-member Karnataka assembly when the results were declared on Tuesday.