I'm basically a religious person, but a scientist by training. From one point of view, science is a way of dealing with a lot of the uncertainty in the world we live in. The scientific method is an art -- general guidelines that have been proven to be successful at improving our knowledge and understanding of the world. I don't buy into the absolute statements from others saying "Science says ..." or "Science is ...".
I carry much of my scientific skepticism and open-mindedness to studying the Bible. I find that when I study it with historical context and probable authorship in mind, there is a lot of insight and wisdom to be found. But there are (at least) two distinct creation legends incorporated into Genesis, and I can't understand how or why so many people insist on glossing over that fact and trying to just accept (blind belief) some kind of amalgamation of these stories and the genealogies that follow as a literal truth.
I don't think that science and religion really need to be at odds. They are two different approaches to knowledge of course, but neither one is absolutely the best approach for every situation. Where there are apparent contradictions between the two, I increase my uncertainty and hope that in the future I'll understand things better.
With religion, I try to respect my past experiences and beliefs while at the same time being willing to change my beliefs when it seems reasonable to do so. I don't like to think of works like the Bible as an absolute authority, but as a collection of writings that have long been recognized as profound, helpful, and inspired. I think that any philosophy that's more rigid than this would make me more susceptible to influence.
Now that we're way off topic, I'll go back to Santorum. He's just spouting propaganda of course, willing to say whatever is necessary to get votes. He's preying off of people's desire to feel safe and comfortable with a status-quo, and the desire to be smug and feel in-the-right. What's true or is not true has (apparently) nothing to do with politics. An honest politician is like a sickly gazelle in the Savannah. Evolution has weeded these out in the U.S. long ago.