The Ohio governor cancelled some public events after striking a deal with Mr. Cruz to cede certain states to each other, but Mr. Kasich still met privately Tuesday in Indianapolis with about two dozen convention delegates and other prominent Republicans. He also attended two fundraisers.

“It’s definitely confusing,” said Mike Murphy, a convention delegate and former chairman of the Indianapolis GOP who was at the meeting. “A lot of the people who were going to go with Kasich in Indiana now feel really adrift… I think the deal was a mistake. It’s contrived and smacks of desperation.’’…

“Kasich is the only presidential candidate with an aspirational message,” Mr. Murphy said. “I don’t think Trump making fun of how Kasich eats pancakes is adding to the national discussion.”