Sununu says Haley could post a "strong second" in Iowa and New Hampshire; calls Trump "weakest" candidate

New Hampshire Gov. Chris Sununu, who has endorsed Nikki Haley for the GOP Republican presidential nominee, said on Sunday the former South Carolina governor could "post a strong second" in Iowa and New Hampshire.

“Nikki Haley is the only candidate surging in Iowa and in New Hampshire. The fact that if Nikki could post a strong second here, that is great, and we're going to do that," Sununu told CBS's "Face the Nation."

He said that Haley has a chance of "shattering the presumption that Donald Trump is going to run away with this (nomination) and that happens right here in New Hampshire," adding that Haley also "knows how to win" in her home state of South Carolina.

Sununu noted that he plans to support the eventual Republican presidential nominee, whoever that is.

"With Nikki Haley at the top, she wins by 10 points. It is a fundamentally different argument because you get the Senate, you get the House seats and the governorships, you get all the way down the ticket, the Republicans win," Sununu said. "Donald Trump is simply the weakest candidate and so, again, that is the opportunity that Nikki brings to the table.