Without going into great detail, I’m going to say no. An emphatic no. But I also have an emphatic yes to add to it. Yes, being Christians should inform our politics. But Christianity should not. Because, if it does, there is a very real chance that we will start to identify our politics with Christianity. And that’s idolatry. That’s setting the finite and corruptible works of man up as the work of God. That the road to ruin, perhaps worse than sinful error.
It was far harder to convince the Pharisees, who believed they had encapsulated God and his holiness in their law, than it was to convince the sinners of the world. Any time you make the mistake of identifying a political movement or philosophical movement with Christianity and holiness itself, you are on the road to destruction. Not the ruin of apostasy, but the ruin of pharisaism and religiosity and self-righteousness. A false religion is more dangerous than no religion at all, because it peddles a false salvation.
So no, our politics shouldn’t be informed by Christianity. But being Christians should inform our politics.