I can't imagine that that'd happen, they need to maintain some level of "we're trying here" in order to effectively rile up their base to vote. Not appointing someone to the NLRB is much less noticable than Supreme Court justices stepping down. I think that the optics are best for both parties if the Supreme Court is basically always a 5-4 split one way or the other, or it is always 5-4 (R). That way the line is that it's always this close to {getting the Supreme Court back,the other team getting the Supreme Court} to mobilize voters.
I can't imagine that that'd happen, they need to maintain some level of "we're trying here" in order to effectively rile up their base to vote. Not appointing someone to the NLRB is much less noticable than Supreme Court justices stepping down. I think that the optics are best for both parties if the Supreme Court is basically always a 5-4 split one way or the other, or it is always 5-4 (R). That way the line is that it's always this close to {getting the Supreme Court back,the other team getting the Supreme Court} to mobilize voters.