There's an article from the Washington Post claiming that the United States is now a center-left nation politically. I happen to disagree with this argument. The U.S. has been a relatively conservative nation. I need no other evidence for this in the 2008 election than the Proposition 8 results in California. As a Republican, I happen to support gay marriage, but even California rejected it.
Many of the folks that vote Democrat, such as the black and Hispanic vote, are socially conservative and church-goers. It's usually only the college student and college professor demographics that are the true leftists. America remains a moderate-to-center-right nation. Pro-gun (good), anti-gay marriage (bad thing), pro-choice (meh), and pro-America!