In case you, like most Americans, don't have a clue yet who you want to vote for in the primaries, I have a site for you that may help you sort through some of this. It's a candidate calculator
where you can rank a whole host of issues based on whether or not you support that particular one (from abortion rights to sanctions against Iran to increasing the minimum wage) and then also rank how important this issue is to you (low, medium, high). If you don't know about a particular issue, you can click on it and be linked to information on its Pros and Cons. So, not only can you find out which candidate most represents but you can also be informed about issues of which you might not yet be aware. Basically the sweetest combination ever.