This NPR News Now episode covers the midterm election landscape, highlighting a Democratic lead in polling and growing concerns over potential National Guard deployment at polling places. The broadcast also reports on escalating tensions between the U.S. and Iran, with President Trump threatening military action and Iranian President Pezeshkian responding with defiance at the UN. Additionally, the segment details the upcoming high-stakes state visit by Chinese President Xi Jinping to Washington and the internal debate in the AI industry regarding a pause in development, as smaller labs push…