The answer depends on how a person defines evolution. Its meaning is very elastic. In one sense it may be widely held, but in no sense does it seem to be widely understood in a common way.
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Why Is Evolution So Widely Believed? | ClearThinking Christianity. [Editorial note, September 27, 2015: Apparently, this site no longer exists. You can at least still see the beginning of the article at the Ratio Christi link below.]