Tamil Nadu is all set to take on both, Lok Sabha and the bypolls at the same time. Campaigners across party lines have been using various issues of the state to their advantage, one such is the mystery surrounding the death of former chief minister J Jayalalithaa who died while undergoing treatment for two months. DMK chief Stalin has assured probe into the matter. However, the AIADMK points out that the DMK is using Jayalalithaa's name to gain advantage.