Earlier quoted context omitted.
The Republican party was the party of the "wealthy elite" back then. They rebranded themselves as the standard bearer of Christian values to boost their voter base. Now their base is so hooked on this tribal identity they will vote for candidates whose behavior is antithetical to the stated party platform.
The Republican Party has been a fusion of business elite and evangelical Christians since its inception. The two groups not only broadly overlapped, see https://en.wikipedia.org/wiki/Quakers , but both had adverse interests to the slaveholding south. The religious segment opposed slavery, and the business segment favored economic policies favorable to manufacturing industry (e.g. a strong currency, tariffs, and infra…
Maybe I just miss this, but that doesn't seem to match up with current evangelical support of the Republican party.