Most Republicans would go into the 2018 midterm elections boasting of low unemployment and economic growth. Donald Trump is not most Republicans. The President has an affinity for protectionist tariffs—most recently including two hundred billion dollars on Chinese-made goods—and while he says that trade wars are “easy to win,” they have become a hot issue in some key Senate races. In states like North Dakota, Ohio, and Tennessee, those tariffs—and China’s sixty billion dollars in retaliatory duties—could possibly give Democrats control of the Senate. John Cassidy and Sheelah Kolhatkar, both staff writers, parse how candidates in both parties are navigating a new economic order.