In an interview with a reputable Hausa news channel, Adamu disclosed this on Wednesday.
The APC candidate for governor, Nasir Yusuf Gawuna, lost to Abba Yusuf of the New Nigeria Peoples Party (NNPP).
He said: ”Kano is among the states that we beat our chests and said that this is ours, because whatever we do, Kano is at the top of our list.
“But because of selfishness, we found ourselves in this situation. We shouldn’t have lost Kano, but everything that happened to a person, God knows.
“We had warned all APC governors in Nigeria to do away with any form of selfishness before the election, and we think it is that selfishness that led us to lose in a state like Kano,” he added.
Adamu called the loss of power by the APC to those who refused to follow orders.
The APC chairman, however, said that once the election was over, his party would hold its members accountable for their actions.
Adamu added that, God willing, the supplementary elections in Adamawa and Kebbi will be in APC’s favour.