NPR News Now covers the narrowing margin in competitive House races despite national polling favoring Democrats, alongside Alaska Senate candidate Mary Peltola rescheduling events after a car accident. The report also details a political earthquake in Serbia as a student-led list defeats President Vucic's party, and notes Nobel laureate Maria Corina Machado's return to Venezuela. Additionally, the episode highlights new research estimating 50,000 heat-related deaths in Europe this summer and provides weekend box office results for films like "Clayface."