The paper examines modus meanings reflecting interaction between the persuasiveness and partitivity categories. The aim of this work is to identify and substantiate the types of interaction between the two categories under study. Modus meanings are studied using the following research methods: comparative analysis, pragmatic method, distributive analysis, component analysis, content analysis, definitional analysis, discourse analysis. Indicators of the studied persuasiveness and partitivity modus categories perform different functions in the text: a) the pragmatic function (foregrounding the persuasion semantics, “calling for unification”); b) the function of text formation (explication of formal and semantic coherence and integrity of the text/text fragment; the modus key function); c) the compositional function (influencing the compositional pattern of the text/text fragment, providing different types of composition). Despite both studied modus categories possessing a wide array of means of expression at the lexical, grammatical, and syntactic levels, partitivity, being a separate category, is one of the ways for manifesting the category of persuasiveness in political discourse.