Shiv Sena chief Bal Thackeray today asked Narendra Modi to adhere to PM Vajpayee’s suggestions and strictly follow rajdharma. ‘‘By successfully conducting the polls, Modi followed rajdharma but his responsibility has increased manifold and he will have to strictly follow it,’’ he said.Thackeray said he had advised the BJP against a change of guard in the state in the wake of riots. The Sena may have differences with the BJP but it supported them in Gujarat, he said. ‘‘I had told the party that it was only Modi who could win the state back for it. Had the Congress come to power, the whole of Gujarat would have been turned into Godhra.”