Trump botched the spelling of coaching legend Bobby Knight's name in a tweet.
"He's already been mathematically eliminated," Huckabee said.
Portman and Strickland are locked in a tight battle for Senate in Ohio.
Clinton raised $26.4 million, just $400,000 more than Bernie Sanders.
"Imagine what a different world it would be if someone told Donald Trump that years ago," he said.
"The bosses want to pick whoever they want to pick," he said.
Only 38 percent think he should stay in the race.
“You are creating the phony pushback,” Trump told host Chris Cuomo.
"The Indians have gone wild on that statement," he said.
Bill Clinton was greeted with jeers in Logan, W.Va.