PATNA, April 17 -- RJD's national working president Tejashwi Prasad Yadav is set to campaign for Dravida Munnetra Kazhagam (DMK) candidate in Tamil Nadu from April 18. The leader of opposition will also canvass for one party candidate contesting from a seat in Kanniyakumari district, RJD insiders said on Thursday. "Our party candidate is contesting from the Vilavancode assembly constituency in Kanniyakumari district. RJD national working president Tejashwi Prasad Yadav is going to canvass for him and also other candidates of ruling DMK from April 18 onwards," said Shakti Singh Yadav, RLD chief spokesperson. Senior leaders, including former MLA Bhola Yadav, said that Tejashwi is set to campaign in Tamil Nadu on April 18 and 19 for the party's candidate and for DMK in a few constituencies. Gowrishanker, RJD state president of Tamil Nadu unit, said John Christopher T will be RJD's candidate from Vilavancode. "Our leader RJD chief Lalu Prasad and Tejashwi have always supported the ruling DMK," said he....