Aristotle taught us that rhetoric is centered around deliberation, and he emphasized that we may only deliberate about things that we can in fact undertake (Rhetoric, 1357a, and elsewhere, mainly in the ethical works). Rhetorical argumentation is, in its essence, the bedrock of such deliberation: It provides the reasons for and against various choices, which we exchange when, in some human collective, we are to decide on a course of action. To be sure, not all rhetoric is argumentation. But all deliberative discourse uses rhetoric, and in such discourse rhetorical argumentation is central (and should be, we might add). Hence, we have found it in place to present a collection of work that revolves around the conception of rhetorical argumentation just outlined and asserts the centrality of that notion in any theory of argumentation.