The rise of the Christian Right in the U.S. has much to do with the fallout from the Civil Rights Act in 1964, which caused a split in the Democratic Party and resulted in a lot of the ‘boll weevil’ Democrats moving to the Republican party. About this time, there was also a demographic shift where Christians increasingly moved to the South and Midwest in the U.S. This destroyed the ‘solid south’ base for Democrats, after which the Democrats increasingly came be to be the representatives of the east and west coasts and big cities (and states dominated by big cities), while the Republicans became more representative of the southern states and the midwest.
The Moral Majority under Jerry Falwell formed during Carter’s Presidency, and had only limited power under Reagan. The real era of Christian power in the Republican party started with the election of George Bush I, when Pat Robertson formed the Christian Coalition. a much more overtly political organization. The movement gained strength when Clinton was elected, as it was one of the major organizing forces against the Democrats while the Republicans were out of power. Then Republicans swept the House and Senate in 1994, with a new indebtedness to the Christian Right that they haven’t been able to shake off since.
But the cracks in that coalition are showing. The new generation of Republicans are much more socially moderate than their parents. The old leaders like Falwell and Robertson are gone. The South is fracturing again and losing Republican support. So the Republicans have to rebuild a new coalition, and the Christian Right, while it will always be a part of the Republican party, is destined for a much smaller role.
The boll weevil’s influences are fading. They were never economic conservatives - they were big supporters of the New Deal and Truman’s Fair Deal, and their existence in the Republican party and the rise of the Christian Right led directly to Bush’s ‘compassionate conservatism’, which was not centered around traditional small government conservatism at all.
Now the Republicans have to rebuild their coalition, and it looks to me like the only constituency they’ve got to build up is the economic conservative/libertarian wing. If they try to rebuild themselves around the Christian Right, they’ll by marginalized until they smarten up, because all the Demographic trends are moving in the opposite direction. They need to rebuild themselves as a party of fiscal conservatism and small government, or they’re doomed. I’m just not convinced that particular constituency is big enough any more.