HYDERABAD: Munugode MLA Komatireddy Rajgopal Reddy on Thursday formally sent a letter of resignation to Congress chief Sonia Gandhi, requesting her to relieve him from the party’s primary membership. In the letter addressed to Sonia Gandhi, Rajgopal Reddy reiterated that as a loyal worker of the party he had faced humiliation in the TPCC led by its president A. Revanth …