Clearly, gaining the 200 nominations I requested is not sufficient to make me leader of the Pilot's Federation. This 200 nomination goal was rather a metagame objective aimed at further building up my "political resume".
During the early parts of my overlording career, I discovered that my claims to power were vehemently disputed or ignored, even when backed by massive amounts of might-makes-right ganking.
However, when I began to publish more and more tangible demonstrations of my overlordship that I could cite during arguments, such as this,
https://m.youtube.com/watch?v=gTY_aHYuqFM commanders increasingly accepted the legitimacy of my overlordship.
According to Lesson One in my Definitive Guide to System Overlord (
https://m.youtube.com/watch?t=3s&v=6Tq4IBEkEZw), "You have power when others *believe* that you have power. Thus, you must instill this belief in others."
This takes us back to the nominations. Receiving write-in nominations from commanders requesting me to become leader of the entire Pilot's Federation is an unprecedented political achievement, and a concrete and citable demonstration of my power. I have more nominations of this sort than any other commander in the history of our galaxy. This was just another means of making others believe in my power in order to grow the scope of my overlordship even further.
The choice of the Princess as kidnapping target has little to do with actual political alliances, and more to do with exploiting sensationalism. Human beings empathize with beautiful victims far more easily than they they do victims of actual political merit.
The other reason I chose a Aisling had to do with opportunism. Technical issues that I won't go into made her the only real target I had to choose from.