Ter mais acessos em meu site

Have a site that had something like 200 hits/day minimum (Google Analytics). Some point at day 23/October/2014 had a major decrease in access to something like 20 per day. Researching we find that Google had made changes on it's searching algorithm to prevent piracy but we dont know for sure if it is correlated. This site is like a Political Directory. Need to have research on this case, SEO Analysis and improvements to regain access. Access to host will not be granted. Need only SEO instructions that will be redirect to programming team.