In the upcoming book, The Last Republicans, which explores the terms of both Bush presidents, former President George H.W. Bush reportedly calls Trump a "blowhard" and reveals that he voted for Democratic candidate Hillary Clinton in last year's elections.
Neither of the former Republican Presidents voted for Trump..
The comments come two weeks after George W. Bush warned of divisiveness and threats to modern democracy in a sweeping speech that took clear aim at Trump - without ever mentioning him by name. "And I'm not too excited about him being a leader", he said, according to CNN's report. His son and also a former president, George W. Bush also has a low opinion of Trump, saying Trump "fans public anger and came to office without any understanding of the job".
"The Last Republicans" is set to be released on November 14.
George W. Bush told Updegrove that he was surprised Trump won the nomination and presidency.
Both former presidents have candidly voiced concerns about Trump's leadership ability.More news: Hindu terror remarks: Case filed against Kamal Haasan under various sections
The Last Republicans offers revealing and often moving portraits of the forty-first and forty-third presidents, as well as an elegy for the Republican "establishment", which once stood for putting the interests of the nation over those of any single man. "Donald Trump is everything that the Bush family is not", Updegrove told CNN.
Barack Obama, who has been more directly under fire from Trump, had recently hit back by speaking of the return of "politics of division that we have seen so many times before that dates back centuries".
The book by Mark K. Updegrove was previewed by The New York Times and CNN on Friday.
The book's title was inspired by the younger Bush's concerns that he had been "the last Republican president" - not just because Clinton was seen as favorite to win the election, but because Trump represented a major break from traditional conservatism. Like his father, the son disregarded the advice. "I do think he was different", she said. I always liked him, but I didn't like him so much for a while because I thought he hurt George.
The younger Bush resented the implication that anyone was steering him. He added that Cheney and Donald H. Rumsfeld, his defense secretary, "didn't make one f-- decision". "I understand the way the system works", he said.