But we in the United States live in an ongoing experiment with representative democracy.
As a result, we live through election campaigns, the likes of which Aristotle does not discuss in his famous treatise on civic rhetoric.
Now, in the legislative assemblies in the United States today, what Aristotle means by deliberative rhetoric occurs in the debates about proposed legislation.
Moreover, when we turn our attention to considering political campaigns for elective office in the United States today, we can usually find candidates who campaign on certain proposals for legislation that they would like to get enacted if elected. Such proposals would usually qualify as examples of deliberative rhetoric, because they do provide springboards for debate.
Nevertheless, I would suggest that much campaign rhetoric in the United States is best understood as epideictic rhetoric rhetoric designed deliberately to "evoke deep values" (in Samuelson's words).