Yes.
My wife was visiting with a friend the other day who is involved in Southern Baptist ministry. Her friend told her that many of the 20-something “conservative” southern Baptists are planning on voting for Obama.
The communist government schools, and the feckless seeker churches have been very successful at instilling secular humanism in the minds of even the conservative Christian youth. Unfortunately, so-called “mainstream” establishment conservatism is also infected with moral relativism on so many issues. This CANNOT be blamed on the Dimocrats alone - we need to look in the mirror!
America is perhaps 20-40 years behind Western Europe in de-Christianization. Evangelicals have failed to stem the tide for a number of reasons, which you have pointed out. The conservative political establishment has failed as well. We will suffer the same fate as Western Europe: socialism, some suppression of conservative Christianity (Catholicism included), and increasing moral degeneracy. The fact that the American people, for all practical purposes, have nothing but dreadful choices for President is telling. So is the Obama phenomenon, where he is sweeping the primaries while offering only rhetoric about "change".
I wish I could be more optimistic. No one wants to be a Jeremiah, but I see no reason to delude ourselves.