Who is Tim Walz? What to know about Harris' VP pick. And, a new Hamas leader

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Vice President Harris introduced the nation to her running mate, Minnesota Gov. Tim Walz, last night at a Philadelphia rally. It marked the first time the Democratic ticket appeared together in person. Harris cited Walz’s time as a National Guardsman and teacher and some of his progressive accomplishments as governor during his introduction. Here are five takeaways from the event.