A precariously narrow but consequential slice of the electorate broke with its own voting history to reject openly extremist Republican candidates — at least partly out of concern for the health of the political system.
Senator Mark Kelly, a Democrat, holds an edge in his bid for re-election, but the race for governor appears to be a true tossup, even as several Republican candidates sow doubts about the results.
If Mr. Trump’s endless refusal to concede has vastly expanded the universe of believers and skeptics, the sentiment has begun to detach from his personal fortunes.