Donald Trump: 'Nice' Carly Fiorina Did 'Terrible Job' at Hewlett-Packard

PHOTO: Donald Trump is pictured on Aug. 14, 2015 in Hampton, N.H. | Carly Fiorina is pictured on Aug. 6, 2015 in Cleveland, Ohio.PlayCharles Krupa/AP Photo | Chip Somodevilla/Getty Images
WATCH Donald Trump Criticizes Carly Fiorina's Private Sector Record

During a visit to the Iowa State Fair on Saturday, Republican presidential candidate Donald Trump -- while repeatedly describing her as “nice woman” -- took aim at his GOP rival, former Hewlett-Packard CEO Carly Fiorina, attacking her record in the private sector and her failed California Senate bid.

“She's a very nice woman, she got fired, she did a terrible job at Hewlett-Packard, she lost in a landslide -- other than that, she's a very nice woman," Trump, echoing recent comments, told ABC News Martha Raddatz when asked for his thoughts on his solo female GOP competitor for the nomination.

Trump’s comments represent another attack in an ongoing war of the words between the two Republicans, both of whom have cited their business acumen as positives in their run for the presidency. Fiorina, who seemed to avoid attacking Trump earlier this year -- she said he was tapping into an existing anger -- has taken the real estate mogul to task recently over his comments on Fox News anchor Megyn Kelly.

For his part, Trump has not backed down, tweeting recently "I just realized that if you listen to Carly Fiorina for more than ten minutes straight, you develop a massive headache. She has zero chance!"

Speaking today on “This Week,” Fiorina said, "You know, it's not clear to me that Donald Trump is a Republican, first of all, based upon his willingness to run a third party bid and the -- some of the positions that he's taken."