In the era of big data, memes and disinformation, the Democrats are trying to regain their digital edge as the president and his loyalists dictate the terms of debate.

The deceptively edited video that purported to show Joseph R. Biden Jr. endorsing President Trump’s re-election bounced relentlessly around the internet, falsely painting the former vice president as too confused to know what office he was running for or whom he was vying to run against.

The doctored video didn’t originate with one of the extremist sites that trade in left-bashing disinformation. It was posted on Twitter by Mr. Trump’s own social media director. From there, it collected shares, retweets and likes from the social media accounts of the president, his eldest son and the multitudinous conservative influencers and websites that carry his message to voters’ palms hour by hour, minute by minute, second by second.
https://www.nytimes.com/2020/03/30/us/politics/democrats-digital-strategy.html