The philosophy of this group is simple: let's just get a whole bunch of Christians together in one state, so that we can overwhelm the elections and make sure our candidates get into office. As their Web site states: "ChristianExodus.org is moving thousands of Christians to South Carolina to reestablish constitutionally limited government founded upon Christian principles."
Once they flood the ballot boxes and get their candidates into office, their aims are to do all of the usual things you'd expect from religious blockheads: ban abortion, kick out immigrants, pray in schools, crack down on undesirables, and all of that fun stuff.
Their Plan of Action page is a real hoot. So far, as of early 2007, they've apparently moved a total of 15 families to South Carolina to put their master plan into action. At this rate, they'll be able to take over the state government by the year 2200.