I found This article interesting about Ron Paul. He's only one year older than McCain.
And though I'm not a one issue voter this sets him apart from McCain also...
"In 40 years of medical practice, I never once considered performing an abortion, nor did I ever find abortion necessary to save the life of a pregnant woman.
In Congress, I have authored legislation that seeks to define life as beginning at conception, HR 1094."
The article states...
"Fueled by the generous donations of Paul believers, the congressman was probably the most successful GOP fundraiser in the fourth quarter, acquiring nearly $20 million...So, while the "front-running" Republicans each win one state and no one builds up a head of steam, Paul just keeps hanging around, like a bad cold. Some of the other Republican candidates should be careful, lest they get the sniffles one of these days."
What is his voting record? Click if you're interested.