What would Goldwater do?

The conservative ascendancy that was achieved in 1980 reflected a broad consensus favoring government more robust abroad and less ambitious at home — roughly the reverse of Tuesday’s consensus. But conservatives should note what their current condition demonstrates: Opinion is shiftable sand. It can be shifted, as Goldwater understood, by ideas, and by the other party overreaching, which the heavily Democratic Congress elected in 1964 promptly did.