Neutral point of view
The original intent, when first expounded by Jimbo Wales and Larry Sanger, was to prevent any article from presenting exclusively one point of view on any controversial subject. However, influential cliques found that they could suppress minority viewpoints with the "undue weight" provision. The members of these cliques would claim that by giving attention to a "fringe" viewpoint, an article would give "equal validity" to POV. In practice, this functioned the same as University speech codes to prevent opposing viewpoints from being described fairly - which directly contradicts NPOV.
Conservapedia has no such policy, and only accepts views which are free of bias to these liberal ideas.