Michael Barbaro

Their delegates are piling up by the hundreds. But Donald Trump and Hillary Clinton’s triumphs on Tuesday masked a profound, historic and unusual reality: Most Americans still don’t like him. Or her.

In foreboding conversations across the political world this past year, a bipartisan chorus warned that the 2016 presidential campaign was teetering on the edge of violence.

Robert Guillo gave a glowing evaluation to his instructor at Trump University because, he said, the teacher pleaded for the best possible score, warning that without it, “Mr. Trump might not invite me back to teach again.”

A divided Republican Party erupted into open and bitter warfare on Thursday as its two previous presidential nominees delivered an extraordinary rebuke of its current front-runner, Donald J. Trump, warning that his election could put the United States and its democratic system in peril.

The most consequential night of voting so far in the presidential campaign crystallized, in jarring and powerful fashion, the remarkably divergent fortunes of the two major parties vying for the White House.

In a rollicking day of spectacle, spite and scorn, Gov. Chris Christie of New Jersey declared his allegiance to Donald Trump and war on Sen. Marco Rubio, describing him Friday as desperate and unfit for the presidency.

Sen. Marco Rubio, alarmed by Donald Trump’s ascendancy and worried that his presidential chances were slipping away, unleashed a barrage of attacks on the real estate mogul’s business ethics, hiring practices and financial achievements in Thursday’s debate.

Ready or not, voting for president begins in Iowa on Monday.

Sarah Palin’s meandering, fiery, sarcastic, patriotic and blustery speech endorsing Donald Trump for president Tuesday in Ames, Iowa, does not easily submit to categorization.

In a series of sometimes biting exchanges, Clinton declared Sanders was misguided in his handling of votes on gun control and even in his grasp of how essential capitalism is to the American identity.