Call their bluff
The Evil Party, in their typical moderate fashion, is threatening to abolish the filibuster rule if the Democratic Party ever bothers to filibuster any of the evil thugs that the Evil Party nominates to run the Fourth Reich. If the Coward in Chief is going to send out his apparachiks to make these sorts of threats, why, the Democratic Party has a pretty clear path. Filibuster them all; G-d will know his own, and let the treasonous scum in the Evil Party make it painfully obvious that they're converting the United States into a fascist dictatorship.
After all, what's there to lose? The thin film of credibility Maximum Leader Genius might get by being able to walk over the prostrate bodies of his foes?