Democratic presidential front-runner Hillary ClintonHillary Rodham ClintonJeff Bridges: ‘I’m rooting’ for Trump as a human being Leading Pelosi critic Moulton once penned effusive praise for her: report Dems land top recruit for Ros-Lehtinen's Florida district 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 TrumpDemocrats target Trump's border wall in defense bill debate Obama ethics czar: Trump fundraiser at his DC hotel ‘illegal’ Trump trolling of Comey — Not presidential MORE in which he sought to highlight Bill ClintonBill ClintonFormer WH press secretaries: End live daily press briefings Jared Kushner hires Abbe Lowell for legal team Overnight Energy: Trump White House kicks off 'Energy Week' 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 SandersBernie SandersNew Alexandra Pelosi documentary brings together GOP, Dem members Sanders: FBI inquiry of wife is 'pathetic' attack Why UK millennials voting for socialism could happen here, too 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.”