Donald Trump preparing for debate with help from Matt Gaetz, Tulsi Gabbard: Sources  ABC NewsHarris prepares for the showdown she’s long sought with Trump as he takes more informal approach  CNNHarris’ past debates: A prosecutor’s style with narrative flair but risks in a matchup with Trump  The Seattle TimesHarris’ momentum has stalled — but not reversed. Here’s 5 takeaways from the latest polls.  POLITICOThese are the rules that the Biden-Harris campaign agreed to: Joe Concha  Fox News