This paper concerns the distribution of the nominative (NOM) and the oblique (OBL) form in personal pronouns in Modern Danish. According to a main rule, pronoun NPs in the function as subject occur in NOM and OBL is used in all other syntactic functions. However, in a number of constructions this rule is not always adhered to. In this paper, we present four studies of the distribution of NOM and OBL where variation is found. The studies are based on the data of two corpora, one of written language and one of spoken language. We find that structural as well as stylistic and psycholinguistic features influence the distribution of NOM and OBL, and that there is considerable difference in the distribution as regards spoken and written data.