Congress President Rahul Gandhi is set to address four public rallies in the southern state of Tamil Nadu. Mr Gandhi will address public rallies in Krishnagiri, Salem, Theni and Madurai today. In Theni, Mr Gandhi will address a political rally to gather support of Congress candidate EVKS Ilangovan. In a direct attack on Prime Minister Narendra Modi on Thursday, Mr Gandhi said, "PM Modi is not invincible and it will become clear after the Lok Sabha elections." Yesterday, 91 seats across 18 states and two union territories went to polls in the first phase of Lok Sabha elections. Mr Gandhi's rallies today are scheduled for the remaining phases of the seven-phased national elections. Tamil Nadu goes to the Lok Sabha polls in a single phase on April 18.