I dont think people vote so much acutally, so this is my suggestion to make voting more atractive:
Make a reward system for voting, maybe something when you vote you'll get Vote Points or something.
And when you have enough Vote Points you could spend them on Kals, Uns 95 Cards, Gems or other stuff (but dont put to powerful items in the rewards)
Idk about this suggestion is to hard to make, but it will make the voting more voteable XD