Hillary Clinton implied in a candid interview Sunday that Democrats may regret nominating Sen. Bernie Sanders to run against President Donald Trump.

Speaking with CNN host Fareed Zakaria, Clinton refused to endorse either Sanders or Joe Biden, but said that Biden is a stronger candidate who would better represent the Democratic Party in a general election.

"As I've said many times, I do not think he's our strongest nominee against Donald Trump," Clinton said, according to Axios. "I think what Joe's victories on Super Tuesday showed is that he is building the kind of coalition that I have, basically. It's a broad-based coalition. ... putting together a coalition of voters who are energized."

"People are turning out," she continued. "And they're turning out to try to pick the person they think would be the best president, but also the person, as our nominee, who would most likely be able to beat Trump."

The former secretary of state then implied that Trump wants to run against Sanders — not Biden — indicating that a Sanders nomination would be good news for Trump.

"Clearly, the Trump campaign, and Trump himself, know who they don't want to run against and know who they do want to run against," she said.

However, Clinton did say that she will support Sanders if he wins the Democratic nomination, though she said she would only campaign for him if he asked her to do so.

Clinton made it clear in a new Hulu documentary on her life that she does not like Sanders, calling him a "career politician" and claiming that "nobody likes him."