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The story is getting familiar: Donald J. Trump won the biggest contests of the night, as Senator Ted Cruz of Texas captured the most conservative state up for grabs. Hillary Clinton kept a clear upper hand in the Democratic race, but Senator Bernie Sanders of Vermont proved he would not be driven away anytime soon.

Tuesday’s elections could have brought new clarity to the presidential primaries. Instead, they only seemed to confirm that both parties would probably settle their nominations by battling for delegates well into the spring.

For Republicans, Trump is in control

Nothing silences criticism like victory, and Mr. Trump racked up several on Tuesday. His successes in Hawaii, Michigan and Mississippi dealt a painful psychological blow to Republicans who had convinced themselves that his campaign was losing steam.

But Mr. Trump won, and he won big, with no obvious cracks in his support from disaffected, lower-income whites.