You do realize how many people vote in my state, right?
They go in, select "Straight Democrat" or "Straight Republican" to select the party they prefer. They don't stop to read the names and positions and think about who they are voting for.
Unless Ron Paul is the republican nominee, and he won't be (he is going up against Guiliani, Romney, and McCain), he doesn't stand a chance. You don't hear about Fred Thompson much, either, but you hear about him a lot more than Ron Paul.
Electing the president is a popularity contest. And that still hinges on the Mainstream Media.
Do you hear about Richardson or any of the other Democrats running? No. You only hear about Clinton, Obama, and Edwards. One of those three (leaning towards Clinton or Obama as the likely candidate) will get the nomination.
I don't care how much money RP has raised, or how many supporters he has on the internet. I don't hear his name mentioned when talking to other people, nor do I hear about him when the morning news comes on.
So, while he is qualified under the Constitution and there is the possibility that he could be elected, it probably ain't going to happen.