Purvanchal has become the center of politics in UP. Amit Shah reached Varanasi and on Saturday he will start the election campaign from Azamgarh, a stronghold of the Samajwadi Party. Meanwhile, Akhilesh Yadav will hold a rally in Gorakhpur, the stronghold of CM Yogi. Why Purvanchal's politics is so important for every party in the UP elections? Watch this special report.