Tripura Chief Minister Manik Sarkar will address 17 election rallies in Tamil Nadu and Kerala to canvass votes for the CPI-M, party sources said here on Thursday.Sarkar, a politburo member of the Communist Party of India-Marxist (CPI-M), left on Thursday for Chennai to take part in the election campaign in the two poll-bound states.A CPI-M leader said Sarkar would address eight election rallies in Tamil Nadu and nine in Kerala during his eight-day tour to the two states.The polling for electing the 140-member Kerala assembly and 234-member Tamil Nadu is to be held on May 16.Sarkar has just been through election campaigns in West Bengal and Assam.