Donald Trump and his campaign are signaling a shift toward an election strategy laid out by conspiracy theorist, dirty trickster, and informal Trump adviser Roger Stone.

For months, Stone has pushed for Trump to invoke the Clintons’ supposed “war on women,” and both the candidate and campaign staffers have been making the rounds this week indicating that they plan to do so.

Stone heads a pro-Trump super PAC and previously served as a paid consultant to Trump’s campaign. He has been a key promoter of Trump’s candidacy in the media, particularly on the radio and internet program of 9/11 conspiracy theorist Alex Jones.

Stone himself is an ardent conspiracy theorist. He recently floated the theory that the Clintons had four people murdered over the summer, which dovetails with his previously stated claim that the couple is “plausibly responsible” for the deaths of roughly 40 people. Stone has also alleged that the Bush family “tried to kill” President Ronald Reagan, that President Lyndon Johnson was behind the assassination of President John F. Kennedy, and that the father of Senator Ted Cruz was involved in the killing as well – a theory that was pushed by Donald Trump.

Stone said he had doubts that Clinton would have the stamina to do an entire 90-minute debate and claimed she was wearing an earpiece during NBC's candidate forum because she “clearly has no memory.” He also claimed Clinton was placed on an oxygen tank immediately after the recent presidential debate and “has some advanced form of epilepsy.”

Former Trump adviser Michael Caputo, guest hosting on the September 25 edition of WBEN’s Hardline, said he “heard more than one time Donald Trump say” that Stone’s book The Clintons’ War on Women “is his opposition research on the Clintons.” He added that Trump “has it on his desk.”

The book, co-authored by fellow conspiracy theorist Robert Morrow, describes itself as a guide to “how Bill and Hillary Clinton systematically abused women and others -- sexually, physically, and psychologically -- in their scramble for power and wealth.”

Morrow is also a discredited researcher. He has a history of bizarre sexual writings about Hillary Clinton and the Clinton family. Morrow also relishes tweeting the slur “nigger” and was ousted as the chair of the Travis County, TX, Republican Party by “party officials who found him a perpetual embarrassment.”

Previously, Trump has promoted Morrow and Stone’s book on his Twitter account. In January, after claiming that Bill Clinton was “one of the great woman abusers of all time," Trump cited Stone’s book for his claim that Hillary Clinton “went after the women very, very strongly and very viciously, according to the women and according to other sources.”

Following his poorly received performance in Monday night’s debate, Trump appears ready to again follow Stone’s advice. Politico reported that “threats emanated from Trump Tower on Tuesday that the Republican nominee was preparing to name-check Bill Clinton’s mistresses — alleged or otherwise.”

Immediately after the debate, Trump told the media, “I'm really happy I was able to hold back on the indiscretions in respect to Bill Clinton. Because I have a lot of respect for Chelsea Clinton.” He added, “Maybe I'll tell you at the next debate. We'll see. But I'm very happy.”

Top Trump campaign surrogate and former New York City Mayor Rudy Giuliani said, “The president of the United States, her husband, disgraced this country with what he did in the Oval Office and she didn’t just stand by him, she attacked Monica Lewinsky. And after being married to Bill Clinton for 20 years, if you didn’t know the moment Monica Lewinsky said that Bill Clinton violated her that she was telling the truth, then you’re too stupid to be president.”

Trump deputy campaign manager David Bossie appeared on Fox & Friends and said, “I think that if you look at Hillary Clinton's background and if you look at her being an enabler, really, in the '90s and really attacking these women, it goes against everything that she now tries to spout as a candidate for president.”

Eric Trump, the nominee’s son, lauded his father’s “courage” for not bringing up Lewinsky during the debate during a radio appearance.

The Stone-influenced strategy comes at the same time the Trump campaign is also reportedly receiving advice from Fox News founder and former chairman Roger Ailes, who was ousted from the network after former anchor Gretchen Carlson accused him of sexual harassment and sued him. Soon after, at least 25 women came forward, making very similar allegations about Ailes’ behavior over multiple decades. Recent reports indicate that after the debate debacle, Ailes’ role with the Trump campaign may be expanded.