THIRUVANANTHAPURAM: The election in Thiruvananthapuram corporation, which is anxiously being followed by the entire nation, is witnessing a neck to neck fight between BJP and LDF. Even though in the initial phase of the counting LDF had a clear lead, now BJP is behind LDF and seat margin between them is changing constantly. As the sitting seats of BJP are going to be counted now, the electoral contest is going to be unpredictable. As per the latest poll results, in Thiruvananthapuram, LDF is leading in 21 seats, BJP in 13 seats and UDF in 3 seats. Whereas the UDF has subsided in these polls to such a meagre level that they are not in the picture.