Why Jayanagar by-poll defeat at the hands of Congress should worry BJP

The JD(S) did not field a candidate in Jayanagar, which falls in the parliamentary constituency of union minister Ananth Kumar

By-poll results are generally said to favour ruling parties, and there is currently a Janata Dal (Secular)-Congress coalition government in Karnataka. But the last time Congress won the Jayanagar assembly constituency was in 2004, and its win there on Wednesday should worry the Bharatiya Janata Party (BJP) because of its near term ramifications. 

Janata Dal (Secular) leader Danish Ali, who is the convener of the JD(S)-Congress coordination committee, told Business Standard that Jayanagar's example is set to become a template upon which the two parties will contest the 2019 Lok Sabha elections. "You shall see the alliance will sweep Karnataka