The general way to cite websites in APA is:
Author, A. A., OR Corporate Author. (Date of publication). Title of document. Retrieved from http://Web address
So, for example, you would cite Doug Collins Project Vote Smart page like this:
Project Vote Smart. (n.d.). Doug Collins: Biography. Retrieved from https://votesmart.org/candidate/biography/67851/doug-collins#.W75DWajwY2w