Source: The Washington Post - Link
Americans’ religiosity overall has declined significantly in recent years, but even against that backdrop, the decline is sizable. Over this span, White evangelical Christians’ share of the population has declined by 37 percent, compared with 8 percent for White nonevangelical Protestants and 27 percent for White Catholics. The decline has also very notably continued over the past three years, despite a slight rebound in these other groups. The result: There are now more White nonevangelical Protestants than evangelical ones for the first time since at least 2006.
I’m not so sure this hits the nail on the head. Any decline in Christian Nationalism is a good thing since it is idolatry.