The Russia Collusion hoax is the most successful Russian psy op ever mounted against the United States. Paid for by the Democrat Party elite, the Clinton campaign unwittingly colluded (oh, the irony) with Russian intelligence to fracture and destabilise the American political system to such an extent that it still is nowhere near healing over 8 years later.
Never before has a political figure been the subject of such partisan hatred and derision as Donald Trump. The sheer volume of negative press, misinformation and disinformation, the blatant lawfare, the continuing, unrelenting efforts to influence the upcoming elections, often without any corroborating evidence, is everything Russia could have hoped for.
Russia does not want a second term in the White House for Donald Trump. A Kamala Harris administration represents the continuation of the Washington machine, predictable, easy to plan for, easy to circumvent when necessary. A Trump administration, on the other hand, is distinctly unpredictable. From experience, it operates in an asymmetric fashion, making its actions difficult, if not impossible, to counter.
A Trump administration represents risk. Risk that an action could provoke consequences outside the Russian scope of expectation. Risk of the unforeseen. Risk that the cost of any action would be unbearable. It changes the calculations. And Putin and Russia are not good at changing strategy.
For Putin, a Harris presidency is eminently preferable. So the campaign continues and the DNC, the Democrat Party as a whole and all their supporters will play along willingly, oblivious or uncaring to the fact that they would be giving Russia what it wants.