All the ideas and comments posted for the contest are realistic but I think that it's losing the popular votes or entries due to the restrictions on voting and the time frame allowed for contending.
For the voting that is an issue there too because the voting process is not understood by most members....if it was then you'd have more voters. The voting process needs improvement in my opinion, something to the matter that it can be done efficiently without going through multiple steps just to cast a simple vote. Something simpler, ...voting is important that's how we get the winner/winners.
The contest does need a little more time for projecting the entry and finishing.