Lucknow, Apr 8 (ANI): Former BJP leader Ashok Pradhan on Tuesday joined Samajwadi Party in the presence of Party Supremo Mulayam Singh Yadav. In a setback to BJP days ahead of April 10 elections in Gautam Budh Nagar, former Union minister and senior leader Ashok Pradhan joined Samajwadi Party, claiming that there was "trade" of Lok Sabha tickets in the saffron party.