Take pragmatic encroachment to be the view that whether one knows that p is determined at least in part by the practical consequences surrounding the truth of p. This view represents a significant departure from the purist orthodoxy, which holds that only truth-relevant factors determine whether one knows. In this chapter I consider some consequences of accepting pragmatic encroachment when applied to problems of political knowledge and political ignorance: first, that there will be cases in which it will not be practically rational to acquire political knowledge when the stakes surrounding one’s political actions are high; second, that political knowledge can be more easily acquired when one values the welfare of others less; and third, th...