No one ever seems to talk about the biggest party switch.
People forget the Democrats prior to the civil war were largely anti establishment.
It really boils down to understanding of history, or lack there of.

Edit: removed word.

There was no switch. Dnesh D'Souza makes a great argument against the fake history and explains well how it came to be via the echo chambers of the left. To wit, an academic makes a lying claim all wrapped up in scholar-speak, writes a paper or book, goes out and promos it, gets it in different channels of media and gets multiple talking heads quoting his bunk and soon a proposition with no merit is everywhere and accepted as fact.

He argues that for the switch to occur, it would have be at a certain point in time -- after the Civil Rights Act, to be specific, because it was the Republican party is the major pusher of the legislation against Democratic opposition. Only one Blue Dog Democrat ever switched parties, while the rest continued being Democrats, many until their death. Racial switch from the party of Lincoln, happened before and during Jim Crow, due to the economic realities of the New Deal era and Depression, not after the Civil Rights Act.

Some of the southern Jim Crow states were effectively one-party states. What general consensus (i. e. the Republicans were invading carpet-baggers) did not remove power from Republicans, the intimidation of the KKK effectively removed or converted. Every Jim Crow law was passed by Democrat-controlled legislatures, signed into law and enforced by Democrat governors. That is objective history that can be looked up and has to be ignored by Democrats.

A good deal of President Kennedy's opposition within his own party was mainly due to the fact that he did not have this southern sensibility, but it was mitigated by his vice-president who did. Said vice-president became president and from biographical accounts never repented of his racism. Therefore, the theory goes, that he, after losing the Civil Rights Act battles, morphed the strategy in a way to use the government to keep the "uppity Negroes" down by the same means used against the American Natives -- dependency.

In fact, the south did not turn solidly Republican until the late eighties or into the nineties. It made a gradual shift over 3 decades as racism became less tolerated. It embraced the conservatism of the Republican party as it lost its racism. Furthermore, it seems to have the same metro vs. rural split that others parts of the nation have -- it just has less big cities of sizes found in the coastal states.

In short, the time frames do not fit the Democratic narrative of a platform switch of the parties. Occam's razor requires us to look elsewhere for the explanation.

Go into any American history book and look at the party,of almost every Senator,and Congressman below the Mason Dixon line which happened to be the line of free state and slave state!All the Democarts! All the same states passed Jim Crow laws separate but equal after reconstruction....All the Democarts!The Ku Klux Klan started by Nathan Bedford Forrest ex Confederate Calvery General(Brilliant)Democrat conceived and initiated to stop Black voters!Civil Rights legislation was passed by Republicans majority 1964!Oh and Abraham Lincoln Murdered by a Democartic actor sympathizer John Wilkes Booth Republican! All indisputable facts!