Answer:
If you have an idea about what is “rhetoric” means before, then you will easily get the idea about “political rhetoric”.
“Political rhetoric is the topic that concerns the strategies used to construct persuasive arguments in the formal public debates and everyday political disputes”, mentioned by Condar in his paper. This special rhetoric sometimes is tricky and used in a bad aspect. Many political rhetorics are used in writings and speeches that are related to the public. There is a newspaper titled "Just how unique is the political rhetoric of the Donald Trump era?" In this newspaper, writers list several presidents in the USA and compared them with Trump. It's a nice article, maybe you can get more ideas about "Political Rhetoric".