India, June 19 -- In a big jolt the NDA in Karnataka, Congress came out with flying colours in the state Legislative Council elections on Thursday, registering victory on five out of seven seats. However, this big Congress win was all thanks to cross-voting by at least six BJP lawmakers and between four and eight JD(S) lawmakers.

The development left the BJP high command fuming, and the party's national president Nitin Nabin has summoned Karnataka BJP chief BY Vijayendra to understand how the cross-voting could happen, news agency PTI reported.

Vijayendra has also accepted that cross-voting took place by members of his party, as well as the JD(S). "There is no question of forgiving the MLAs in our party who have cross-voted. They will n...