KANPUR, April 29 -- Intensifying his involvement in the crucial state of Uttar Pradesh for the fourth and fifth phases of the Lok Sabha election and revving up the BJP poll machinery, Union home minister Amit Shah, hailed as the brain behind the BJP's phenomenal wins in Uttar Pradesh in 2014 and 2019, on Sunday undertook a comprehensive review of 13 parliamentary seats in the state with party leaders in Kanpur....