There are six vacancies in Congress that will require special elections to fill. It is essential that as much support for liberal candidates as possible gets focused on those six seats.
They are outlined in this article from
Ballotpedia.org
Then there are are 23 Democratic seats, eight Republican seats, and two seats held by independents up for election in 2018 and it is essential that all 23 Democratic seats remain in Democratic control as well as at least three of the incumbent Republican seats get overturned.
Let's work to see that it is impossible from the Trump Administration to fill any Judgeships after 2017.