Plus, a cheery au revoir to the Paris Olympics.   Tune in every weekday morning. To get our full audio journalism and storytelling experience, download the New York Times Audio app — available to Times news subscribers on iOS — and sign up for our weekly newsletter.Tell us what you think at: theheadlines@nytimes.com. On Today’s Episode:The Hacking of Presidential Campaigns Begins, With the Usual Fog of Motives, by David E. Sanger and Michael GoldHarris Leads Trump in Three Key States, Times/Siena Polls Find, by Lisa Lerer and Ruth IgielnikThe U.S. and Arab Mediators Prepare to Present a ‘Final’ Proposal for a Cease-Fire in Gaza, by Isabel KershnerParis, Uncharacteristically Giddy, Bids Au Revoir to the Olympics, by Catherine Porter Subscribe today at nytimes.com/podcasts or on Apple Podcasts and Spotify. You can also subscribe via your favorite podcast app here https://www.nytimes.com/activate-access/audio?source=podcatcher. For more podcasts and narrated articles, download The New York Times app at nytimes.com/app.