The Religious Right has played a key role in legitimizing the GOP's anti-poor, anti-human agenda
The Republican Party's white, evangelical and other right-wing Christian constituencies (which more and more Republican elected officials are members of themselves, FWIW) are critically important in this regard - because those people follow a theology that blames, well, "those people" (LGBT individuals, single mothers, people on welfare/public assistance, black people and other PoC, immigrants, Muslims..) for their supposed "immorality" or even "criminality."
The fact that this theology aligns quite nicely with the priorities of the greedy, contemptuous rich fucks who bankroll the GOP just makes everything easier for them. The white American Religious Right's obsession with punishing the poor and other marginalized people for their alleged "immorality" provides a convenient source of popular support for the Republican Party's hatred of the US government's social welfare state (cuts to which are one side of their political priorities - tax cuts for the rich being the other side, of course 
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And like them, he too is a professional con man who preys on the poor and desperate as he laughs all the way to the bank.
A match made in "heaven." 
Or at least give them a stern talking to. But in this America he'd get called a "libtard" and run out of town.