I don’t think you want a “Christian Democratic” party in this country because “Christian Democrats” are basically just the international equivalent of the socially conservative, economically liberal American Blue Dog.
What we need to do is to go back to the message that Goldwater had in 1964 that inspired so many people.
Unfortunately, Goldwater was pro-abortion. And he was unable to win because his message was limited to fiscal/libertarian conservatism.
There’s no way on earth that a conservative candidate can win without the Evangelical vote and the conservative Catholic vote. Goldwater appealed to neither.
This is a perennial problem. We need fiscal conservatives, social conservatives, and conservative libertarians all working together, or we will lose again.