Battle of heavyweights: BJP & Congress put 2 Madhya Pradesh ex-CMs in fray

Former CMs Digvijaya Singh and Shivraj Singh Chouhan contesting in 2019 MP Lok Sabha elections. Patwa, Arjun Singh's past contests revisited. Chouhan's Vidisha candidacy scrutinized. Digvijaya's Bhopal defeat and strategic moves discussed.