Anyone who has lived in Texas knows that, in some communities, it seems like there are more Baptists than there are people. For every 100 folks who say they are Baptists, about 20-30 are going to be seen in a pew on a regular basis.

Anyone who has lived in, oh, Maryland knows that the state has a rich Catholic heritage. But what is the percentage of "Catholics" in the state who actually attend Mass on a regular basis, let alone practice the teachings of the faith?

Anyone who has lived in New York knows there is a wide gap between the people who are identified as Jews (the Bernie Sanders non-Jewish Jews niche is in here) and the number of people who practice any version of the Jewish faith, either on the doctrinal left or right.

Let's do one more. Anyone who has lived in or near Utah knows that when people talk about the Mormon population, that includes many "Jack Mormons" who are part of this flock on the cultural level, sort of, but are not active in the Church of Jesus Christ of Latter-day Saints.

What's my point? If you ask Americans if they are "born-again Christians," you are going to get totals that are way, way higher than the number of people who frequent church pews.

Clearly, if journalists (and pollsters) are actually interested in what is happening in this year's bizarre Republican race for the White House, someone is going to have to come up with questions that probe the gap between people who self-identify as "evangelicals" (or who say they are part of evangelical churches) and those whose beliefs and lifestyles have anything to do with mainstream evangelicalism.

The bottom line: What does it mean to say that Citizen Donald Trump is winning the "evangelical" vote with 30-plus percent of that vague, undefined total?