The part about them popping champagne as the election results confirmed great victory is on page 34 of this Senate intelligence report.
It describes in detail how Russia targeted disinformation to their clueless idiots on both right and left to subvert the election. (Clueless idiot of course is Russia's term, not our intelligence services'.)
The IRA's information warfare campaign also responded to real-world political
events. For example, the IRA promoted multiple stories and narratives calling into question the
state of Hillary Clinton's health after she fell ill at a September 11 memorial service in New
York City in September 2016. IRA influence operatives posted phrased content on Twitter using
hashtags that made the content easily discoverable to other Twitter users searching for content
related to Clinton's health, including #HillarySickAtGroundZero, #ClintonCpllapse,
#ZombieHillary, and #SickHillary. According to researchers at Clemson University, IRA
accounts tweeted these hashtags hundreds of times. As one of those researchers~ Darren Linvill points out:
You can see the peak times they tweet. You can see that they shift from hour to
hour. One hour, they'll tweet their left-wing accounts, and the next hour they'll
tweet their right-wing accounts.-. . . You can see very clearly that it is one
organization, and it has applied human capital as is needed, depending on what's
happening politically, what current events are.
https://www.intelligence.senate.gov/sites/default/files/documents/Report_Volume2.pdf
We can't underestimate what they're doing now unless we want to be even more shocked and frightened than need be. There's going to be more bad.
At least the anti-Democrat, anti-democracy, illiberal leftists don't seem to be the assets they were when they played a critical role in throwing the nation to the Republicans. Just checked a LW dissident forum, still leaderless and flopping unhappily on the bank. So far the real investment seems to be in RW civil disorder.