A majority of Republicans nationally support establishing Christianity as the national religion, according to a new Public Policy Polling survey released Tuesday.

The poll by the Democratic-leaning firm found that 57 percent of Republicans “support establishing Christianity as the national religion” while 30 percent are opposed. Another 13 percent said they were not sure.

It almost goes without saying that the Establishment Clause of the Constitution prohibits establishing of a national religion.

The poll was conducted among 316 Republicans from Feb. 20-22. The margin of error was plus or minus 5.5 percentage points.