Watch News Nation's special show 'Aabki Baar Kiski Sarkar' to take a quick look at the change of political scenario of Bihar's high-profile Patna Sahib Lok Sabha seat in the last five years. The stakes are high as disgruntled BJP leader Shatrughan Sinha has this time joined Congress and will be locking horn against Union Minister Ravi Shankar Prasad to retain the seat.