With a slightly different spin of the wheel, Ms. Thomas might have wound up a public figure in her own right, out picking fights and spreading chaos in the mold of Representatives Marjorie Taylor Greene and Lauren Boebert. Back in 1986, as a young lawyer fighting against policies like maternity leave and comparable worth, she was named one of “28 young women of promise” by Good Housekeeping. At the time, she expressed a desire to run for Congress. But the next year she married Clarence, and his subsequent appointment to the Supreme Court scrambled her trajectory. “I’m kind of stuck here,” she told The Wall Street Journal in 1997, when asked about her youthful congressional dreams.

Instead, Ms. Thomas has for decades operated in a kind of gray zone: Her professional identity and influence are not wholly defined by her husband, but they are inextricably bound up in his importance. She has endeavored to make the most of a tricky situation. And without question, she has been helped by — and she has capitalized on — the shift in her party toward its right wing. For Ginni Thomas could not be Ginni Thomas without the mainstreaming of conspiracy culture and heavy-duty grievancemongering in the G.O.P.

Ms. Thomas has long been one to get swept up in the passion of causes and movements. In her early years in Washington, she joined the Lifespring self-help craze, which many people criticized as a cult. She eventually extracted herself from the group and went on to become an anti-cult activist.

During the Obama era, she threw herself into the Tea Party revolution with gusto, cultivating connections and credibility with the party’s angry populist wing. When Mr. Trump came to power, she threw herself even harder into the MAGAverse — which is more a cult of personality than a political movement.

Ms. Thomas goes in for sharp-edge partisanship and evil-libs-are-destroying-America demagogy. Finding so many like-minded warriors in Mr. Trump’s Republican Party freed her up to really let her freak flag fly.

During his presidency, she would approach administration officials about people she thought should be fired or hired. She would occasionally pop in to visit with Mr. Trump at the White House. For one formal sit-down, she brought along a bunch of her conservative allies for what inexplicably morphed into part gripe fest — with attacks on everyone from transgender people to Republican congressional leaders to members of Mr. Trump’s administration — and part quasi-prayer session.

Much like Mr. Trump, she took to social media with a vengeance, pushing out lib-bashing memes and other partisan red meat. Her efforts to meddle in the 2020 election were merely the high point — or, rather, low point — in a long and tireless career of crusading.

Not that Ms. Thomas’s work is finished. The MAGAfied Republican Party is one in which her most outrageous views and behavior are ever more at home. This does not seem to trouble her extremely powerful husband or much of her party — at least not enough for anyone to seriously consider holding her accountable. Given all this, the most disturbing question we really should be looking to clarify may be: What on earth will she get up to next?

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