Donald J. Trump won the Florida Republican primary on Tuesday, according to The Associated Press, dealing a blow to Senator Marco Rubio in his home state, and Hillary Clinton was the winner in the Democratic primary
Mr. Trump entered the day with a wide lead in the polls and fended off an onslaught of negative advertisements from his rivals. The Manhattan businessman, who has a residence and several significant investments in Florida, was able to appeal to voters with his message of economic populism and his hard line on immigration.
The loss is a significant setback for Mr. Rubio, whose fortunes have quickly faded despite his standing as a favorite of the party establishment and who now must consider whether to continue his bid in an effort to deny Mr. Trump the nomination.
Mrs. Clinton was expected to do well in the Sunshine State, capitalizing on its older population and large numbers of minority voters. Senator Bernie Sanders continues to do well with younger, white voters but has struggled to broaden his base.
The victory by Mrs. Clinton adds to the challenge that Mr. Sanders will face as he tries to overtake her for the Democratic nomination.
There were 214 delegates at stake for the Democrats, and 99 delegates at stake for Republicans. Florida is a winner-take-all state for the Republicans.