You're going to have to drill down on the concept of the religious right here.
Catholic Integralists for example never really warmed up to Carter, or Ford for that matter, or Reagan, or basically anyone until Pat Buchanan.
Ford did very well with Mormon voters while Carter did better with Baptists. Pentecostals in terms of their politics are very much split, as Jesse Jackson got big support from some Pentecostal churches, but so did Sarah Palin twenty years later, as she was really one of the first to be on the public stage.
I believe Orthodox Jews still went heavily for Carter, even if that was beginning to show a bit of cracks.
But as for what the "religious right", in the manner in which liberals discuss it (which is basically limiting it to Baptists and deploying the deliberately unhelpful and amorphous term 'Evangelical'), would do in this circumstance, with a Ford victory? That is going to depend on what Ford does in office with another term. The decision to politically engage at all wasn't exactly an easy one without opposition; the Kanawha County School boycott was a tipping point because it showed that you actually COULD make a change by engaging rather than pretending cultural upheaval won't come for you. But if Ford's education department isn't going after Christian schools, than perhaps this recedes.