Is there some sort of voting mechanism?

I want to have contests where people can vote on a model registered on our site at http://www.seethemodel.com. I'd like to be able to either vote for the registered user so they can see all the photos in their albums, or require the contestants to upload only one photo for the contest and have people vote on the photo itself. Non-registered users would need to be able to vote.

I know there are likes, but as I know it works, I would have to go through every photo to find which has the most likes, and even then, they'd be from the day the image was posted, not necessarily the day the contest went live.

is there any way to do this via easy social? I tried installing the SIMGallery extension from http://www.simbunch.com/products/simgallery that claims it works with EasySocial, but I can't figure out how to use it and their support hasn't answered any of my questions.

Thanks much!