Since the era of “The Man in the Grey Flannel Suit,” Connecticut has played an outsize role in defining the American suburb. High-quality, low-density living remains one of the state’s chief draws and suburban voters are one of its most important constituencies. Across the country, suburban voters fed up with President Trump broke heavily for the Democrats in the midterms. That happened in Connecticut, too, but it wasn’t a “change” election in the Nutmeg State. Rather, it was a “more of the same” election. Democrats retained control of the governorship and strengthened their position in the state Legislature

Republicans...