The original poster had some very valid points.
I have been in sales for over 4 years and I also pay close attention to these things. Though you may have been persuaded and look past the idiosyncrasies of Ron Paul, someone really seeing him for the first time has no persuasion one way or the other. Being in sales, it took me several weeks to refine my body language, vocal tones, speech inflections; so that people could hear what I was saying.
The truth is that people judge you 60% based on appearance, 30% based on how you say things, and 10% on what you actually say.
Appearance has a lot to do with how you hold yourself. Are your shoulders slouched? Is your your abdomen firm? Is your chest high?
How you sound is greatly influenced by whether you are using your diaphragm to speak, and if you keep the air flowing through your words. Also it is important to say more with less words and keep your words per minute at a certain speed depending on the audience. It is important to slow your speech down when you want to provide emphasis on something.
Ron Paul certainly has the content in what he says, the other 90% is so easy to fix and I wish I could talk with him on the phone just once to help him get there.