IF Chief Minister M. Karunanidhi's son Stalin was a surprise candidate for the Madras mayor's post, the trumpcard came from Jayalalitha Jayaram, the much-beleaguered AIADMK chief. No political pundit could have predicted she would strike a 'deal' with foe-in-chief, Janata Party President Subramanian Swamy. But she has responded to Swamy's call for a united fight against the DMK by withdrawing the AIADMK candidate against Chandralekha, the Janata Party's state unit chief and a bitter rival.