ریاضیات پشت موج دموکرات - یا ناراحتی GOP

The math behind a Democratic wave — or a GOP upset

Data: The Downballot and Sabato's Crystal Ball at the University of Virginia Center for Politics. (Balance of power accounts for opposing party gains due to redistricting.) Map: Kavya Beheraj/Axios Redistricting has helped House Republicans build a seawall that can withstand a roughly 5-point Democratic wave. Why it matters: Early readings are pointing to something twice that size — enough to wash away the GOP House…