Just go to the vote section and here:
You can get votes by watching ads; there are 30 ads per day, 5 per hour. You get 15 votes per ad, and in case of an event, they give 45 votes per ad.
Enter "Do Missions"
You'll get lots of options to complete missions and win lots of votes:
On TapJoy and Fyber:You need to download apps, most of the time they're games. You have to complete certain levels in the games (you're given a time limit), and once you do, you receive votes (sometimes they take a while to arrive). They also ask you to interact with the app you downloaded.
In Pincrux:You should follow Instagram accounts, like Facebook pages, subscribe to YouTube channels, download apps, and interact with them.
A pollockfish:You have to fill out surveys (I don't really know how this works since it's never let me access it :v)