Thiruvananthapuram (Kerala) [India], April 26 (ANI): Congress MP and candidate from Thiruvananthapuram, Shashi Tharoor queued up outside a polling booth in the constituency as he awaited his turn to cast his vote. Shashi Tharoor, a former UN diplomat and Congress leader will be seeking a fourth straight term from Thiruvananthapuram constituency, as he is faces a two-front contest against Union Minister of State, Rajeev Chandrashekhar and Communist Party of India (Marxist) leader Panniyan Ravindran. Tharoor, who has held the seat since 2009, is facing a challenge as the BJP has named a strong f…