I don't know what exactly you are doing, but I think you should use the Steem API for that and pull the data directly from the nodes.
Each post has a unique link in the blockchain and you could also pull the data directly from Steemit. When you add '.json' in the address bar of your browser after opening a post on Steemit, you get all the post data in JSON format:
For example for my current post:
https://steemit.com/steemworld/@steemchiller/steemworld-weekly-support-7.json
In 'post.active_votes' there are all votes with additional details being listed ;)