  Abstract Like electoral systems, decision-making methods are also vulnerable
to manipulation by decision-makers. The ability to effectively defend against
such threats can only come from thoroughly understanding the manipulation
mechanisms. In the presented article, we show two algorithms that can be used
to launch a manipulation attack. They allow for equating the weights of two
selected alternatives in the pairwise comparison method and, consequently,
choosing a leader. The theoretical considerations are accompanied by a Monte
Carlo simulation showing the relationship between the size of the PC matrix,
the degree of inconsistency, and the ease of manipulation. This work is a
continuation of our previous research published in the paper (Szybowski et al.,
2023)
