One aspect of deliberation is giving reasons to support a position. In this article, I explore how citizens engage in this activity by developing a framework that breaks down reason-giving into component parts, applying it to a set of eight National Issues Forums. Deliberators typically provided evidence (usually in the form of factual statements) to support their conclusions, but frequently did not tie them together with an infrastructure of logical and causal connections. Deliberators engaged in reason-giving by presenting evidence but did not explicate the underlying logic of their positions. This suggests that deliberative research should focus greater attention on understanding the conditions that encourage and facilitate the effective use of evidence to support conclusions, as well as how patterns of reason-giving influence deliberative quality.