PATNA, July 15 -- The BJP has unveiled a 40-member list of campaigners for the July 30 Bankipur assembly by-election, signalling an all-out campaign to retain the prestigious urban seat. The list is headed by BJP national president Nitin Nabin and includes Bihar chief minister Samrat Choudhary, Bihar BJP president Sanjay Saraogi, Union ministers Nityanand Rai, Giriraj Singh and Radha Mohan Singh, former Union minister Ravi Shankar Prasad, senior leaders Vinod Tawde, Deepak Prakash, Mangal Pandey, Ashwini Kumar Choubey, Vijay Kumar Sinha, Dilip Jaiswal, Satish Chandra Dubey, Raj Bhushan Choudhary, Manoj Tiwari, Ramkripal Yadav, Mithilesh Tiwari, Sanjeev Chaurasia, Maithili Thakur and other state leaders. P5...