Complex sentence: In the 2015 Delhi Legislative Assembly election AAP stood victorious and secured absolute majority in the assembly, winning 67 of the 70 seats and reducing it's chief opponent Bhartiya Janta Party to 3 seats while Indian National Congress was reduced to zero.
Split into simpler sentences: In the 2015 Delhi Legislative Assembly election, AAP swept nearly all seats, winning 67 of the 70. Its chief opponent, Bhartiya Janta Party, was reduced to 3 seats, while the Indian National Congress was reduced to zero.