The Dems know by this time that there was no collusion. There certainly has been no favouratism shown to Russia in the Trump regime. They are left with attempting to create a vague illusion of impropriety with the hope that it will create the impression of a President under foreign direction and duress. It's not working. By day it appears to be more and more what Trump sais it is, a witch hunt.
In fact the whole Russian actions surrounding the 2016 election appear trivial, aimed at acerbating extremist elements on the right and the left. All that has NO effect of the outcome. At best it could be characterized as mischief and pales in comparison to some of the American dirty tricks in the world to influence domestic politics.
I think the Dems will be seen for what they are finally. A tribalized collection of post structural ideologies with no coherent, unified economic or social vision. They are now run by the most radical feminist, homosexual, eco-pagan, culturally libertarian or economically socialist groups in their midst. They proffer a future of death and dissolution. There antics have become a carnival of depravity.
They might be handing Trump the Presidency in 2020. They correspond only with the other lunatics in the asylum.