The democratic party has shown how far they've meandered from their initial values. Many liberals are being pushed more centric and many conservatives are being pushed more right: in an attempt to distance themselves from the new leftist extremist party.
reasons why the democrats are extremists:
late term abortion and abortion after birth
everyone deserves equal rights, excepts for the whites (specifically white males) --thats reverse racism
they have become a racist party, akin to the far-right's level of racism
they believe in europe style open borders, tearing down existing borders
idf like making a long list but im sure you get where im going
people are tired of the impeachment, they dont believe this constant stream of bullshit that their is a "multitude of evidence" against trump. If there really was, we would have seen it by now. People have stopped listening a while ago and hardly anyone tuned in to see the most recent impeachment proceedings.
all of the above is proving to be too much for the public, and theyre starting to realize just how insane these politicians are