Crucial that we don't lose any votes in the Senate.
Also, we can't afford the perception that the Democrats are more popular with the voters than the Republicans, or it will be much harder to lean on them to confirm the next judicial appointees.
Bush succeeded with Roberts and Alito because many Democrats didn't dare be seen as obstructing them purely on the basis that they might vote against abortion.
It the Democrats pick up too many seats, it will change the political dynamics and make court appointments more difficult again.
Let's hope and pray. We need at least one more SCOTUS appointment, and preferably as many as we can get!