Darjeeling [West Bengal], April 26 (ANI): Former Foreign Secretary Harsh Vardhan Shringla on Friday cast his vote at a polling booth in Darjeeling. After casting his vote, Shringla showed his inked finger at the polling booth there. Darjeeling has been a BJP bastion since 2009, with the Trinamool Congress never managing to wrest the seat from the principal opposition party in the state. In the 2019 Lok Sabha elections, MP Raju Bista won the constituency with 59.2 per cent of the total votes polled against TMC’s Amar Singh Rai, who bagged a mere 26.6 per cent votes. In 2014, BJP’s SS Ahluwalia,…