I don't think it's possible but hypothetically let's say Joe Biden is the new president come next January. Let's even say he manages to carry the Senate, which is an outrageous long shot but let's roll with it.
What will happen next is that all the people telling you we can't pursue a progressive agenda because We Must Unite To Defeat Trump will seamlessly pivot to telling you we can't pursue a progressive agenda because doing so would Risk Our Majorities.
Then when the party gets blown out in 2022 because the Biden administration has done nothing to make anybody's lives better, those same people will pivot again to tell you that we can't pursue a progressive agenda because we have to Hold On To The White House.
This cycle will repeat until Republicans win the White House again, at which point we won't be able to pursue a progressive agenda because We Must Unite To Defeat Anthropomorphic Coronavirus or whatever nightmare emerges from the GOP next.
It's a scam. It's always been a scam.
I don't blame voters, many of whom have been bombarded nonstop for decades by leaders of both parties with the message that anything to the left of Ronald Reagan is a sure loser and you should just forget about it. It's the people spreading that message who are to blame.
(and most of the media, sorry I shouldn't have left them out)
Yes it is true that the Democratic Party will never cede anything to the left without a credible threat of losing the left’s political support. However, [insert upcoming election here] is The Most Important Election In History, so this is no time for doing politics.
