A former adviser to President Obama said Wednesday that Hillary Clinton should move on from her loss to Trump, and said Clinton's campaign needs to shoulder much of the blame for losing to such an unpopular candidate.

"It takes a lot of work to lose to Donald Trump," David Axelrod told CNN. "He was the least popular presidential candidate to win in the history of polling."

During a Tuesday interview on CNN, Clinton said she is taking responsibility for her loss in the 2016 presidential election, but then blamed FBI Director James Comey, Russia and WikiLeaks for her defeat.

"If the election had been on Oct. 27, I would be your president," she said in reference to Comey sending a letter to Congress about newly discovered emails relating to the FBI's investigation into the former secretary of state's private email server.

"I was on the way to winning until a combination of Jim Comey's letter on Oct. 28, and Russian WikiLeaks raised doubts in the minds of people who were inclined to vote for me and got scared off," Clinton added.

Axelrod put blame on Clinton's campaign for her loss.

"Jim Comey didn't tell her not to campaign in Wisconsin after the convention. Jim Comey didn't say don't put any resources into Michigan until the final week of the campaign," he said. "And one of the things that hindered her in the campaign was a sense that she never fully was willing to take responsibility for her mistakes, particularly that server."

He's hesitant to believe that Clinton really feels she's responsible for losing to Trump.

"She said the words I'm responsible, but... everything else suggested that she doesn't really feel that way," he said. "And I don't think that helps her in the long run so if I were her I would move on."