CHENNAI : Amid AIADMK general secretary Edappadi K Palaniswami's invitation to party functionaries to attend the party's 55th foundation day celebrations at MGR Maaligai, the party headquarters in Chennai, former ministers SP Velumani and P Thangamani held separate events in their respective hometowns, fuelling speculation that differences within the party have widened. On Saturday, Palaniswami launched the celebrations marking the party's 55th anniversary. Addressing party workers, he urged cadres to work unitedly and with determination to overcome the political challenges facing the party....