U.S. Republican front-runner Donald Trump warned on Wednesday of riots if he is denied the party's presidential nomination and pulled the plug on a scheduled debate among candidates, raising the temperature even more in a heated White House race.
The outspoken New York businessman scored big wins in primaries in Florida, Illinois and North Carolina on Tuesday, bringing him closer to the 1,237 convention delegates he needs to win the nomination.
Trump also claimed victory in Missouri but lost the crucial state of Ohio, and left the door open for those in the party trying to stop him from becoming the Republican nominee for the Nov. 8 election.
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