Hillary Clinton takes a swipe at Joe Biden in new campaign memoir, saying she finds his criticism 'fairly remarkable'

In the aftermath of the 2016 election, former Vice President Joe Biden has been critical of Hillary Clinton's campaign, saying he "never thought she was a great candidate," and that he predicted she would lose key battleground states.

Clinton has clearly been aware of the criticism, and in her upcoming campaign memoir "What Happened," the former Democratic presidential nominee offered a rebuttal of Biden's comments.

"Joe Biden said the Democratic Party in 2016 'did not talk about what it always stood for - and that was how to maintain a burgeoning middle class,'" Clinton wrote, according to CNN, which obtained a copy ahead of its official release. "I find this fairly remarkable, considering that Joe himself campaigned for me all over the Midwest and talked plenty about the middle class."

Though Biden campaigned vigorously for Clinton last year and argued in many post-campaign appearances that she would've been a "great president," the former vice president has repeatedly said Clinton did not do enough to reach white, working class voters who previously voted for Democrats but supported Donald Trump or stayed home rather than vote for Clinton.

"I don't think she ever really figured it out," Biden said during an interview in December. "And by the way, I think it was really hard for her to decide to run."

Biden wasn't the only Democrat Clinton singled out in her new book.

Other leaked parts also revealed Clinton still reserved some criticism for her Democratic primary rival Sen. Bernie Sanders, comparing his candidacy to a scene in the 1998 romantic comedy "Something About Mary."