New Delhi: DMK patriarch and Tamil Nadu Chief Minister M Karunanidhi on Thursday filed his nomination for the April 13 Assembly polls from Tiruvarur, his native town.Karunanidhi kickstarted his election campaign on Wednesday promising freebies and this time he's targetting young students. Combating the stain of corruption with a promise of populism 87-year-old M karunanidhi drove past the DMK cadre lined up to see him embark on yet another political journey.The road ahead is not easy. The corruption taint has had maximum impact in the DMK’s urban strongholds. One of the reasons crtitics say the DMK chief gave up urban Chennai where he has contested since 1967, and drove down to his rural hometown Thiruvarur. The veteran has just one answer to the controversies, allegations, and anti-incumbency that surrounds him."In our manifesto we had promised laptops to students from OBC, SC and ST. Now I announce that all students will be given free laptops,” said Karunanidhi.In 2006, the DMK rode to power with the promise of free colour TVs and rice at 1 rupee a kilo. His government did deliver the goods but will it work again in 2011.