(a) What specifically were the questions? It is very easy to bias a poll to get slanted results -- special interest groups do this all the time.
(b) What were the demographics of the poll? That is, who was targeted? It is also very easy to bias poll results this way, even inadvertently. For example, if I targeted the region between 2800 North to 4000 North in Chicago, within 1/2 mile of the lake, and asked: "Do you think gay marriage should be legalized" -- I would probably get a very positive response. If I then announced that "a majority of polled Chicagoans were in favor of gay marriage", I wouldn't even be lying in my words -- but the results would be a lie nevertheless.
(c) What do we mean by applying the labels of Apocalypticists and Literalists?
The link above goes to an article that is hardly unbiased. It as a very particular editorial slant with an undertone that the assertions of the author are both obvious and accepted by all "normal" and "sane" people, and that the problem is those Christian "wackos".
In any case, I cannot find any listing of the statistics cited in this editorial, other than a statement that: "A Newsweek poll found that 36 percent of respondents held the Book of Revelation to be "true prophecy."" -- Well, a Newsweek poll. That's reliable. And again, no analysis of the poll itself.