The broadcast evening newscasts on three major networks on Thursday didn't mention bombshell revelations by former Democratic National Committee interim Chairwoman Donna Brazile.

Brazile has written in a new book that she discovered evidence that she said showed Hillary Clinton Hillary Diane Rodham ClintonWhat Senate Republicans have said about election-year Supreme Court vacancies Bipartisan praise pours in after Ginsburg's death Trump carries on with rally, unaware of Ginsburg's death MORE’s campaign "rigged" the Democratic presidential primary.

"ABC's World News Tonight," "NBC Nightly News" and "CBS Evening News" all didn't report the allegations by Brazile on Thursday evening despite it receiving considerable coverage on cable news and in print and online media. Brazile was also trending as one of Twitter's top topics on Thursday.

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In excerpts released to Politico Thursday, Brazile writes in her new book, "Hacks: The Inside Story of the Break-ins and Breakdowns that Put Donald Trump in the White House," that it “broke [her] heart” upon discovering evidence that she said showed the Clinton campaign "rigged" the Democratic nomination system.

“By September 7, the day I called Bernie, I had found my proof and it broke my heart,” Brazile wrote about a Sept. 7, 2016, call to Sen. Bernie Sanders Bernie SandersKenosha will be a good bellwether in 2020 Biden's fiscal program: What is the likely market impact? McConnell accuses Democrats of sowing division by 'downplaying progress' on election security MORE (I-Vt.), who gave Clinton a far more serious challenge for the nomination than many had expected.

Brazile also shares an arrangement between the DNC, the Clinton campaign and Clinton’s joint fundraising committee that indicated the campaign would “control the party’s finances, strategy, and all the money raised.”

She wrote the arrangement was concocted in an effort to address the mounting debt of the party in the aftermath of President Obama's successful 2012 reelection campaign.

“The campaign had the DNC on life support, giving it money every month to meet its basic expenses, while the campaign was using the party as a fund-raising clearing house,” Brazile wrote.

“If the fight had been fair, one campaign would not have control of the party before the voters had decided which one they wanted to lead. This was not a criminal act, but as I saw it, it compromised the party’s integrity," Brazile added.

President Trump Donald John TrumpObama calls on Senate not to fill Ginsburg's vacancy until after election Planned Parenthood: 'The fate of our rights' depends on Ginsburg replacement Progressive group to spend M in ad campaign on Supreme Court vacancy MORE sent out a flurry of tweets over the Brazile revelations Thursday night and into Friday morning, calling out the Justice Department and the FBI to "do what is right and proper" and pursue the matter.

"Everybody is asking why the Justice Department (and FBI) isn't looking into all of the dishonesty going on with Crooked Hillary & the Dems," the president wrote to his 41.7 million followers.

"New Donna B book says she paid for and stole the Dem Primary. What about the deleted E-mails, Uranium, Podesta, the Server, plus, plus. People are angry. At some point the Justice Department, and the FBI, must do what is right and proper. The American public deserves it! The real story on Collusion is in Donna B's new book. Crooked Hillary bought the DNC & then stole the Democratic Primary from Crazy Bernie!"

Everybody is asking why the Justice Department (and FBI) isn't looking into all of the dishonesty going on with Crooked Hillary & the Dems.. — Donald J. Trump (@realDonaldTrump) November 3, 2017

...New Donna B book says she paid for and stole the Dem Primary. What about the deleted E-mails, Uranium, Podesta, the Server, plus, plus... — Donald J. Trump (@realDonaldTrump) November 3, 2017

....People are angry. At some point the Justice Department, and the FBI, must do what is right and proper. The American public deserves it! — Donald J. Trump (@realDonaldTrump) November 3, 2017

The real story on Collusion is in Donna B's new book. Crooked Hillary bought the DNC & then stole the Democratic Primary from Crazy Bernie! — Donald J. Trump (@realDonaldTrump) November 3, 2017

Despite the Brazile blackout, the ABC, NBC and CBS evening newscasts all featured reports on special counsel Robert Mueller's investigation into Russian meddling in the 2016 presidential election and the recent indictments of Trump campaign chairman Paul Manafort and his business associate, Richard Gates.

The so-called Big Three evening newscasts draw more than 20 million viewers combined on a nightly basis.

This report was updated at 9:17 a.m.