Gov. John Kasich took aim at his fellow Republicans Wednesday night, calling their tax plans a "fantasy."
"These plans would put us trillions and trillions of dollars in debt," Kasich said. "I'm the only one on this stage that has a plan that would create jobs, cut taxes, and balance the budget, and can get it done, because I'm realistic."
The comments came after opponent and one of the leading contenders, Ben Carson, said he would support a flat tax plan at rates close to 15 percent, and would cut from government programs to make up for lost tax revenues. That move would require cuts to 40 percent of the government, according to CNBC analysis.
"We have 645 government agencies and sub agencies," Carson said. "Anybody who tells me we need every penny in everyone of those is in a fantasy world."
Kasich responded that folks "need to wake up." But businessman Donald Trump fired back at Kasich's experience balancing budgets, saying he "got lucky" with fracking.