Kasich believes holding onto his delegates is a smart play in a campaign season that has been wild and unpredictable, an aide explained. The governor also thinks his delegates could become leverage to encourage Trump to be a more positive and unifying figure ahead of the Republican National Convention in Cleveland, said the aide, who requested anonymity to speak candidly. Sens. Cruz of Texas and Marco Rubio of Florida, who also accumulated delegates before suspending their candidacies, have issued similar directives asking that their delegates remain bound. Kasich's message to party officials in the letters, dated Monday and signed by...