First of all, we don't know if those 6.6 million registered voters include Kosovo, correct? So it may be 6.6 million voters out of a population of approximately 10 million. Birth rates are the other key element here. I know they are low accross all of Europe (except Albania), don't know what they are like in Serbia specifically. If people have not been having children over the last 2 decades, that would account for the high percentage of voters in the total population.
So, what happens now?
Well, what's that saying - Nature abhors a vacuum. So I think it's going to be the guy with biggest jaje who is willing to TAKE power will win - and I'm afraid that doesn't look like K.
BTWS How many votes did VK actually end uo with ?