[x]

All of the different denominations probably confuse people.

I notice that somewhere between 20 and 30 percent of the population consider themselves to be evangelical (another hard to define term) and that may be what people are picking up on when they estimate the percentage of Protestants to be in that range.

Or they may be thinking of the number of mainline, non-evangelical protestants which is roughly the same, though it declines as the Evangelical and unbelieving populations increase.

Add the Evangelicals and the other, mainstream Protestants together and you get the total Protestant population.

FWIW, I notice your map doesn't count Mormons as Protestants. I suppose that's true doctrinally, though those who don't belong to either group sometimes have a different impression.

[markomalley]

FWIW, I notice your map doesn't count Mormons as Protestants. I suppose that's true doctrinally, though those who don't belong to either group sometimes have a different impression.

The map was posted at Get Religion.

[ClearCase_guy]

FWIW, I notice your map doesn't count Mormons as Protestants.

Mormons are not Christians. Of course they are not Protestants,

[RegulatorCountry]

Mormons are Mormons.

The writings of their own founders indicate that Mormons did not consider themselves part of any Protestant church. They regarded Protestants in the same light as they regarded Catholicism, which is to say very negatively. Mormons wanted no part of either and regarded both Protestant and Catholic as being in serious error.

[zerosix]

The "hard to define word" evangelical simply means those who adhere to the biblical command from Matthew 28:18-20, "And Jesus came and spoke to them saying, 'All authority has been given to me in heaven and earth. Go, therefore, and make disciples of all the nations, baptizing them in the name of the Father and of the Son, and of the Holy Spirit, teaching them to observe all things that I have commanded you; and lo, I am with you always, even unto the end of the age.'"

[zerosix]

The "hard to define word" evangelical simply means those who adhere to the biblical command from Matthew 28:18-20, "And Jesus came and spoke to them saying, 'All authority has been given to me in heaven and earth. Go, therefore, and make disciples of all the nations, baptizing them in the name of the Father and of the Son, and of the Holy Spirit, teaching them to observe all things that I have commanded you; and lo, I am with you always, even unto the end of the age.'"

[Cronos]

The term "Protestant" is too vague. Some Baptists for instance insist that they are not Protestant. Other folks put Mormons or Jehovah's Witnesses as Protestant

Then, where does one put the Oneness Pentecostals who do not believe in the Trinity? Or the various Jewish Christians or others?

It would be simpler to call all of these as non-Catholic or even to use the Freerepublic Religion Forum categories :)