Four key Assembly by-polls are slated for Wednesday — Nandyal in Andhra Pradesh, Bawana in Delhi and two seats in Goa. Nandyal constituency in Kurnool district has become a high-stakes battle between the ruling Telugu Desam Party (TDP) led by N Chandrababu Naidu and the YSR Congress Party (YSRCP). A win for the YSRCP would boost its chances to upstage the TDP in the Assembly polls slated to be held along with the Lok Sabha polls in 2019. The TDP has an alliance with the Bharatiya Janata Party (BJP); the YSRCP has also shown that it can work with the