The conventional wisdom says the religious right has a monopoly on the "values voters," but that's too simple. We're all values voters. We just define our values differently. In a democracy, politics is the art of capturing the passions of the people, and in the heat of the race, intelligent argument usually drives most of us toward the middle.
"The fact that we cannot escape moral conflicts in politics does not doom American democracy to endless political warfare," writes Jon A. Shields, a professor of political science at the University of Colorado in Colorado Springs, in the Wilson Quarterly. Shields shows how ideologues appeal to the emotions of specific constituencies, but they have to persuade others with reason. "Even the most religiously inspired social movements learn to moderate their appeals in order to win over middle-of-the road citizens."
A slight shift of opinion transforms the red states and the blue states into various shades of purple. Frances Willard, the zealous president of the Women's Christian Temperance Union at the end of the 19th century, understood the importance of reaching out to the opposition. "Be of teachable spirit," she told her followers, "and [be] tolerant of those opinions which differ from ours while we strive to show the reasonableness of ours." An organization called Stand to Reason trains religious activists today to avoid religious language and encourage lively debate on the moral issues of cultural significance.
Religious arguments arm the dedicated ideologue, but a broader argument is necessary to get the less spiritually minded to listen. In the early 20th century there was strong support for sterilization of the psychologically impaired, based on the "science" of eugenics. The Roman Catholic Church naturally crusaded against eugenics, but not by emphasizing religious doctrine. The crusaders brought legal, scientific and moral arguments to bear showing how eugenics contradict our most cherished notions of social justice.
Appeals to compromise or moderation drive the fanatics in any social movement to the sidelines of cultural struggle. Fires destroy everything when zealots get too fired up. It's not hard to find numerous examples. The impatient and irrational flee from appeals to reason to marginalization and then sometimes to violence. The no-compromisers in the civil rights movement begat the Black Panthers, the environmentalists begat eco-terrorists, the New Left begat the Weathermen, pro-lifers begat abortion clinic bombers.