Two days after nine ministers, loyal to him, quit the Karnataka cabinet, former chief minister BS Yeddyurappa has further upped the ante against Chief Minister DV Sadananda Gowda, in a power struggle that is now becoming the Bharatiya Janata Party's biggest nightmare. Mr Yeddyurappa's camp has set a deadline of July 5 to remove Mr Gowda and replace him with Jagadish Shettar, the Rural and Panchayati Raj Minister and Mr Yeddyurappa's preferred choice.