how did thapa win so decisively?

Gagan Thapa won the Nepali Congress presidency decisively with 6,584 votes, securing a 93.88% share at the 15th General Convention. He defeated his closest rival, Shyam Krishna Khadgi, by a margin of 6,209 votes. One key factor in his strong victory was the support from Vishwaprakash Sharma and the fact that he managed to gain support even from within the inner circle of his opponent, Deuba, which weakened Deuba's position significantly.