"It's not just the [political] environment," he said. "The number and quality of candidates makes for one of the best if not the best class we've ever had."
GOP poised to grab control at state levels →
Daniels has pledged to avoid politics while president of Purdue, but the former Indiana governor says he couldn't say no because of the caliber of the panelists.
Daniels joins 2016 presidential debate commission →