PML-N Chief Muhammad Nawaz Sharif has said that new Prime Minister Raja Pervaiz Ashraf would be sent home if he did not write letter to Swiss authorities to reopen graft cases against President Asif Ali Zaradri. Addressing a public gathering here on Friday, Nawaz Sharif subjected the ruling PPP to stern criticism over corruption and bad governance. Commenting on the election of the new prime minister, he said that the real challenge was to write a letter to Swiss authorities. “I am not here to seek votes. It is my love for Sindh, which has brought me here,” he said. Commentators say Mian Nawaz Sharif is busy in making preparations for giving the PPP a tough time in its stronghold of Sindh.