Yes, a last minute drop of hacked emails was how the French presidential election in 2017 was attacked too – by probable Russian entities helped by definite US far right entities like Jack Posobiec.
Unfortunately for the hackers, they'd been spotted well in advance and directed to honeypots.
Hackers Came, but the French Were Prepared
www.nytimes.com/2017/05/09/world/europe/hackers-came-but-the-french-were-prepared.html
“We went on a counteroffensive,” Mr. Mahjoubi said. “We couldn’t guarantee 100 percent protection” from the attacks, “so we asked: what can we do?” Mr. Mahjoubi opted for a classic “cyber-blurring” strategy, well known to banks and corporations, creating false email accounts and filled them with phony documents the way a bank teller keeps fake bills in the cash drawer in case of a robbery.
“We created false accounts, with false content, as traps. We did this massively, to create the obligation for them to verify, to determine whether it was a real account,” Mr. Mahjoubi said. “I don’t think we prevented them. We just slowed them down,” he said. “Even if it made them lose one minute, we’re happy,” he said.
Mr. Mahjoubi refused to reveal the nature of the false documents that were created, or to say whether, in the Friday document dump that was the result of the hacking campaign, there were false documents created by the Macron campaign.
But he did note that in the mishmash that constituted the Friday dump, there were some authentic documents, some phony documents of the hackers’ own manufacture, some stolen documents from various companies, and some false emails created by the campaign.
The drop included some real emails from the Macron campaign, but may well have included fakes from the hackers containing fake scandals.