Horse-race polls this early are poor predictors of election results, and candidates have turned around public opinion before. And the country’s politics have become so sharply polarized that no major-party contender is likely to come near the 49-state defeats suffered by Democrats in 1972 and 1984.
But without an extraordinary reversal — or the total collapse of whoever becomes his general-election opponent — Mr. Trump could be hard-pressed to win more than 200 of the 270 electoral votes required to win.
Mr. Trump has become unacceptable, perhaps irreversibly so, to broad swaths of Americans, including large majorities of women, nonwhites, Hispanics, voters under 30 and those with college degrees — the voters who powered President Obama’s two victories and represent the country’s demographic future. All view him unfavorably by a 2-to-1 margin, according to a recent New York Times/CBS News poll.