Ed Kilgore: “The heart of the 2026 midterm-election battle is a struggle for the high ground of public opinion between supporters and opponents of the president of the United States.”“That’s generally true of midterm elections, and it’s particularly true given the unparalleled visibility — ubiquity, really — of Donald Trump and the polarizing effect he has on the whole country. The outcome of the 2026 midterms may depend on whether 2024 Trump supporters bother to go to vote at all.”