I think this is interesting because it's been exactly the opposite for me and many of the people I know. At some point over the past ten or fifteen years, the Democrats switched their focus to the point that we've unintentionally found ourselves being Republican now. I.e. the midwest Trump vote.
Are these actually in conflict? Are they also not part of the working class? What sort of policies do you think should have been enacted against this?
OTOH, there's evidence that that faction of the party is losing dominance to one focussed on working class interests again.
Clinton was elected on explicit Third Way positions nearly 30 years ago. If you think something changed in the past 10-15, you're falling for GOP propaganda. What you're noticing is the democrats finding a new base a decade after losing their working class supporters, through a combination of Third Way politics, the Republican Southern Strategy. The GOP saw this coming and stoked / capitulated to increasing racist elements of the party during Obama's presidency. This is the only major change in the past decade.
(Well, the democrats aren't really that smart - it's not so much they're finding a new base as they're left with the ones the new GOP ideology intentionally excludes. As a party, they are doing a terrible job mobilizing this!)
I would guess what actually happened to the older people I know is that they grew up in union jobs at factories that got sent to Mexico after NAFTA went through.
Unions lean heavy Democrat. When the union fails you, I think that leads fairly directly to losing faith in the Democratic party.
Further, the insistence by many within the party that the only reason someone would want to leave the Democratic party is that they're racists really doesn't do them any favors.
You think that Democrats have not moved in the past 10-15 years? You think that the idea that they have is merely Republican propaganda? I think you haven't been paying attention.
Or maybe you were paying too much attention. 15 years ago, AOC wasn't even old enough to vote. Were there Democrats in the House who held the same positions 15 years ago? Perhaps so. They didn't have the press attention that AOC gets, though. So they may have been there, but in the eyes of the public they weren't "the position" of the Democrats. Instead, they were fringe.
Now AOC gets as much press coverage as Nancy Pelosi (maybe more, before impeachment). To the average person, AOC and people like her now represent the Democratic Party. That's a massive shift, at least in perceptions, if not in actual position.
And I think the actual position has shifted, too. There are considerably more of the farther-left people like AOC, both in congress and running for president. The median Democratic officeholder position has shifted left. (Or so I strongly suspect. I assert it without statistical evidence.)
I agree we've seen a shift in the democratic party - not yet in its leadership - in the past 2-4 years (beginning with Sanders, its first major electoral effects in the 2018 midterms). What does that have to do with what happened 10-15 years ago?
What did happen 10-15 years ago is Obama's election. Obama's politics do not place him in the left of the democratic party, and in some areas he's firmly in the right part.
So what's the objection to what happened 10-15 years ago, but not 30 years ago? To put it more bluntly - What's the biggest difference between Obama and Bill Clinton? One hint: it's not any political policy.
And why, if the objection is supposed to be about support for the working class, is what's happening in the past 2-4 not good? The return to labor rights as a central plank of the party should be drawing people back if that's the reason they left, but apparently it's not.
To me, this is the incoherent view. Of course the voter base has changing opinions. It's completely to be expected that over the course of decades political alliances will shift.
The entire point of what I said is that the political opinions of the Democratic party moved in a direction that did not match that of my general demographic. Now that opinions have shifted, we find that our interests are better served by Republican talking points than by Democratic ones. So we vote red.
People like to bemoan the fact that America has a two party system, while many other places have a parliamentary system with many parties. The fact is America just handles its coalition building at an earlier step. There is no single "prototypical" Republican or Democrat. There are many factions throughout the country that weigh the political winds and throw their weight behind the group they see as most likely to benefit their own particular concerns.
None of this should be nearly so divisive a topic as it clearly is. The post I replied to noted that there were a bunch of "Rockefeller Republicans" who shifted and become Democrats.
I replied that a similar thing had happened around me, only in the opposite direction. Blue collar Democrats from the 70s-00s, found that after the financial crisis, the political winds pointed them to the Republican party.
I agree that the Democratic platform has moved, but it moved rightwards. The Republican platform has also moved (considerably more) rightwards. If your political positions were once aligned with the Democrats but are now better aligned with Republicans, your personal opinions have necessarily moved dramatically rightwards, and your new alignment has nothing to do with the shift of the parties.