Democrats are already looking forward to impose retaliatory steps, in case Trump goes ahead with his plan to nominate Amy Coney Barrett to the SCOTUS. One measure that they may adopt quickly after the 2020 elections is the removal of the filibuster option. Another option being discussed is to increase the strength of the SCOTUS from 9 to 11, which will allow the new president to nominate two judges. If this happens, then the SCOTUS may once again swing to the left.