Hillary Clinton pays an ex-Russian agent to get dirt on her political rival while corrupting the Democratic Primary election, and when news of all that comes out the Democrats create “Russiagate” to brand Trump as a Russian agent.
After two full years of hysteria, that whole thing lies on the floor like a dead walrus while Democrats idly flog and poke the carcass hoping for signs of life.
Then Joe Biden brags about using $1 billion in US foreign aid to blackmail Ukraine into firing the prosecutor who is investigating the Ukrainian company that is enriching his son Hunter, and the Democrats create “Ukrainegate” before they even know what the telephone conversation in question actually contained, accusing Trump of maybe (there's no evidence) doing what they know for sure that Biden actually did do.
They really think this one is going to work, even though Hillary’s crimes were not identical to those attributed to Trump and that she did not admit them, while Biden’s crime is identical to that attributed to Trump, and not only has he admitted it, he actually brags about it repeatedly.
And, as an interesting little sidelight, they condemn Trump for not delivering the whistleblower to them, notwithstanding that no president in history and been as viciously prosecutorial of whistleblowers as Barack Obama, a policy of which Democrats were fully supportive.