Author Scott Adams — one of the first political commentators to predict President Trump’s electoral success — says the Republican has helped usher in the “violating the corpse phase” of Joseph R. Biden’s 2020 campaign.

The creator of “Dilbert” looked at a Nickelback parody video shared by Mr. Trump on Thursday and all but declared Mr. Biden’s presidential hopes extinguished.

Mr. Trump’s clip of the Democrat and his son Hunter golfing in 2014 with Burisma Holdings board member Devon Archer was viewed over 2.7 million times in less than two hours.

It also became a top-trending topic on Twitter under the hashtag “Nickelback.”

“We are now entered the ‘violating the corpse’ phase of Biden’s presidential campaign,” Mr. Adams tweeted.

We are now entered the “violating the corpse” phase of Biden’s presidential campaign.🤣🤣🤣 https://t.co/CP70yGHIIV — Scott Adams (@ScottAdamsSays) October 2, 2019

The video clip Mr. Trump posted has since been deleted after Warner Bros. claimed copyright infringement Wednesday.

The “Win Bigly: Persuasion in a World Where Facts Don’t Matter” also predicted that Mr. Trump would survive the FBI’s Russia investigation while other commentators predicted it would lead to impeachment.

“So [former CIA Director John O.] Brennan may have started one of the most important political witch hunts in history based on not recognizing a joke — and I’m not even making that up,” Mr. Adams said in August 2018. “I feel fairly confident in saying that what I just said is literally true: that the head of the CIA has almost destroyed the United States because he didn’t understand that an obvious joke was a joke.”

Prominent Democrats have called for impeachment proceedings against Mr. Trump because he spoke to Ukrainian President Volodymyr Zelensky about an abandoned investigation into Hunter Biden’s ties to Burisma Holdings.

Mr. Trump insists that he is being pilloried for trying asking about a legitimate issue and the Justice Department’s Criminal Division determined that no campaign finance laws were violated during the call.

“There’s a lot of talk about [former Vice President Joseph R.] Biden’s son, that Biden stopped the prosecution and a lot of people want to find out about that so whatever you can do with the attorney general would be great,” Mr. Trump said to Mr. Zelensky. “Biden went around bragging that he stopped the prosecution. See if you can look into it. … It sounds horrible to me.”

The president’s tweet features a Sept. 21 exchange between Mr. Biden and Fox News’ Peter Doocy on the campaign trail in Iowa.

“I have never spoken to my son about his overseas business dealings,” Mr. Biden said earlier this month. “I know Trump deserves to be investigated. He is violating every basic norm of a president. You should be asking him the question, why is he on the phone with a foreign leader? Trying to intimidate a foreign leader, if that’s what happened, that appears to be what happened, you should be looking at Trump. Trump’s doing this because he knows I’ll beat him like a drum. And he’s using the abuse of power and every element of the presidency to try to do something to smear me. … Everybody looked at this, and everybody’s looked at it and said there’s nothing there. Ask the right questions!”

• Bailey Vogt contributed to this article.

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