In Tamil Nadu, the CPI-M on Friday said it would support AIADMK candidates for the December 19 assembly by-elections to Vandavasi and Tiruchendur constituencies. Disclosing this in Chennai, the party state secretary N Varadarajan however, ruled out joint campaigning. <br/><br/>CPI had yesterday announced that it would support AIADMK in the bye-elections. The two left parties were part of the AIADMK combine in the Lok Sabha polls but later parted ways. <br/><br/>Meanwhile, PMK founder S Ramadoss told reporters at Tiruchirappalli that his party would neither field any candidate for the bypolls nor support any party.<br/>