No question the Dems missed the last boat.
Don't, however, conclude that the Republicans are in much better shape: consider that the object of Democrats' "activism" is not even aimed so much at Republicans but rather at this first Third Party president in my lifetime. He is hardly a Republican or a Conservative or a religious man- until just yesterday. The once-powerful RNC was undone by his populism (as were the Demos by Sanders' own brand of populism) and the popular themes that brought The Donald to victory are already proving to be a collective American concern- even as he recants many tthose vows as he realizes his unpractible 100 day program to greatness. His Republican base is beginning to splinter already and his fabulous negotiating skills are being revealed as, rather, his undeniable marketing skills- that he is a great negotiator may be only a marketed illusion.
Meanwhile I cannot forget that your open-minded outreaching party is, IMHO, pretty heavy on authoritarianism as exemplified by a tendency, even as it speaks about "deregulation", to put all its moralism and philosphizing into codified laws of Thou Shalt Nots and at the same time adversely focussing those ordinances and deregulations, Constitutional or not, on the middle and lower classes - just like the monarchy we once famously repudiated during the historically activist and Progressive American Revolution.
I don't think this country should be without a civil dialogue, currently absent, between Conservative and Liberal ideals. As midterm re-elections draw nearer I also think that Trump's inadvertant silver lining, as the buyers' remorse steadily mounts, shall be the bringing back of that process and dialogue into our precious Democacy.