I suggest you implement a monthly event called Top Voters, which every month will display the top 5-10 or whatever voters and award them with for example gift cards/store vouchers which they can use in the store to purchase ranks and etc. Many of the top servers have this kind of event and their server votes are astonishing! If you make this a reality much more players will start to vote daily and you will gain much more popularity. Thanks for your time!
Playerbase is low in gc rn, I don't think gc have enough money to do coupon giveaways. GC had this though, but when it had 1000-3000 players.
Well, the price doesn't have to be a store coupon, i just used that as an example. The price could as well be in-game cash or cosmetics, it's all up to the developers to chose. Its the event itself that counts which will encourage and motivate other players to vote more.
i think the top prize shouldent be something THAT big of price maybe a small lasting personal booster or a temp cosmetic item