"This guy is going to be remembered as a guy who possibly destroyed the republic," he added.
Kasich won his home state of Ohio on Tuesday night, complicating the delegate math for Trump as the GOP front-runner looks to lock up the nomination before the party's convention in July.
"I think any candidate — if you don't have a clear path to winning — it doesn't make sense to stay in the race," Cruz early Wednesday on CNN. "Every day John Kasich stays in the race benefits Donald Trump."
"Gov. Kasich won his home state – I think sort of a minimum expectation – but honestly he has no path," former Hewlett-Packard CEO Carly Fiorina, a backer of Cruz, echoed
during an appearance on Fox.
Kasich fired back, arguing
neither Cruz nor Trump could win in a general election.