Given that we all live in the same world, how is it that we can have such very different worldviews? Answers to this question may be found in worldview constructions and their cognitive affordances in text and discourse. This paper discusses why and how worldviews can unfold from a schematic rationale that is grounded in 'the primacy of spatial cognition' in perception, thought patterns and their presentations in language. Although worldview frames are selective, and therefore subjective coordinate systems, the spatial organising principle provides a tangible ground for abstract worldview ontologies. Rhetorically, this real-world/social-world analogy gives worldview constructions an objective epistemic quality that can prime commitment and activate intentions and actions. To operationalise this discourse-space theory, a model is proposed to investigate variation in spatial and temporal frames in political texts, involving their scope of attention and point of view. Examples are taken from an election manifesto analysis for Dutch party positioning. The critical question concerns the rhetorical (evidential) nature of time-and space frames of reference in discursive constructions: How 'real' are text and discourse worlds and how does this relate to variation in discourse-world constructions and (political) stance?