The tally of votes provides information on different categories of votes earned by the two nominated powers. This provides information on the strengths and weaknesses of your foes according to world opinion.
The third category on the vote tally—votes from other great powers—is a measure of the military potential of the top great powers. the governors of provinces controlled by great powers will add their votes to the tally out of fear.
The fourth category—votes from minor nations—is a measure of the diplomatic strength of the top two great powers. Governors in provinces controlled by minor nations consider the diplomatic strength of the great powers when deciding to vote or abstain.