The end never justifies the means
I strongly believe in this as well, which is why I am very strongly against torture under any circumstances. No matter how bad that person may be. It is also why I am concerned when religion becomes involved to closely with politics, especially political parties. A point that was made quite well in this article onTalk2Action.org.
As a grinning Ralph Reed has stated many times publicly, it's not important what people think about you, only that you operate quietly in the background and achieve your goals by any means necessary. What American Christian voters should be asking themselves is, "Are our values truly being heard, or are today's Republican Right simply pretending they are hearing us in order get our votes, remain in power, and instead continue their pro-corporate and pro-militaristic agenda?"
There are many more examples of people who instead of working for Christ are now working for the Republican party. It is also a cautionary tale as those of us who are progressive and Christian are banding together and working to effect change in America.