I started a Google search for "best presidential candidate" and found a couple of interesting links.
The first link is an article on ideamarketers.com and revolves around how the author suggests a way to determine your presidential selection: read AND understand the Constitution of the United States.
This is a great idea! From the article, "Read the rule book".
The second link provides some clarity around hot topics and how your selections match against the voting records and rhetoric of the candidates:
Check out the links and pages to see where you thoughts are leading you.