The stakes are high. According to a new Reuters/Ipsos poll, about half of likely voters rely on presidential debates to help them make their choice. And Monday night's debate may command an audience of 100 million.
Gene Sperling, economic advisor to the Clinton campaign and former director of the National Economic Council, told CNBC's "Closing Bell" the Democratic candidate will tout her "very specific plan" for middle-class jobs and wages, infrastructure, manufacturing and small business.
"This is her chance to remind people that she has been championing these issues her whole life," Sperling said. "That will contrast significantly with somebody whose both ideas and experiences … have been basically about what's been good for him, often at the expense of workers."