Once they do this, the MSM will scream that Trump didn't get the required 270 votes, and point to the 12th Amendment language, declaring that there are 538 members and he didn't get a majority. The Dems will then file Federal lawsuits.
The election will go to the new House of Representative, and then the groups behind Hillary and Soros, and the MSM will start working on the Members of Congress to change their votes, because of some “December Surprise”, against Trump.
The one thing to remember is that the Dems don't care how evil, or nasty they have to be as long as they win, and have the MSM to cover for them can rationalize what they have done.
This is entirely plausible
These bastards are up to something
They will stop at nothing to put her in the white House.
At all costs