Democratic presidential front-runner Hillary ClintonHillary Diane Rodham ClintonIntel Dem decries White House 'gag order' after Bannon testimony 'Total free-for-all' as Bannon clashes with Intel members Mellman: On Political Authenticity (Part 2) MORE said Sunday that attacks against her husband over past infidelities and allegations of sexual abuse “won’t work,” calling them a “dead end” and a “blind alley” for her rivals.

Speaking Sunday on CBS's "Face the Nation," Clinton was asked to respond to an ad released last week by GOP front-runner Donald TrumpDonald John TrumpDems flip Wisconsin state Senate seat Sessions: 'We should be like Canada' in how we take in immigrants GOP rep: 'Sheet metal and garbage' everywhere in Haiti MORE in which he sought to highlight Bill ClintonWilliam (Bill) Jefferson ClintonTrump’s first year in office was the year of the woman Can a president be impeached for non-criminal conduct? Dems search for winning playbook MORE’s affair with former White House intern Monica Lewinskey.

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“If he wants to engage in personal attacks from the past, that’s his prerogative. So be it,” Clinton said, vowing that she’d continue to run as a women’s rights candidate on issues such as equal pay and abortion rights.

Trump has argued that Clinton doesn’t have moral standing to run as a women’s rights candidate, alleging that she sought to bully into silence Bill Clinton’s accusers of sexual impropriety.

The attacks have spurred debate about whether the Clintons’ personal life is fair game. Several other Republican presidential candidates, and even Clinton’s rival for the Democratic nomination, Vermont Sen. Bernie SandersBernard (Bernie) SandersMellman: On Political Authenticity (Part 2) Former Sanders campaign manager: Don't expect email list to be shared with DNC Adult film star: Trump and Stormy Daniels invited me to 'hang out' MORE, have criticized the former president for his behavior towards women.

It comes as Bill Clinton has played a more visible role in his wife's presidential campaign. On the campaign trail, both have sought to deflect questions over his past by refusing to engage with Trump.

Clinton on Sunday called that avenue of attack a “dead end.”

“It’s been fair game going back to the Republicans for some years,” Clinton said. “They can do it again if they want to, that will be their choice as to how to run in this campaign. It didn’t work before, it won’t work again because people are focused on not the past, but the future.”

“They can do whatever they want, more power to them,” she added. “I think it’s a dead-end, a blind alley for them, but let them go. I’m going to talk about the differences between us because I think that’s what Americans care about.”