Interesting website that supposedly tells you the presidential candidate whose stances are most closely aligned with yours, based on some questions. I guess I'll look into Rubio a bit more...
http://www.isidewith.com/political-quiz
Here's mine:
ETA: I just noticed there are more questions in most sections. At the bottom of each section, you can click to show a few more questions. It didn't really change my results (Rubio 97% instead of 100%)