Here is a new paper from Gavin Wright:
The Voting Rights Act of 1965 revolutionized politics in the American South. These changes also had economic consequences, generating gains for white as well as Black southerners. Contrary to the widespread belief that the region turned Republican in direct response to the Civil Rights Revolution, expanded voting rights led to twenty-five years of competitive two-party politics, featuring strong biracial coalitions in the Democratic Party. These coalitions remained competitive in most states until the Republican Revolution of the 1990s. This abrupt rightward shift had many causes, but critical for southern voters were the trade liberalization measures of 1994, specifically NAFTA and the phase-out of the Multi-Fiber Arrangement which had protected the textiles and apparel industries for decades. The consequences of Republican state regimes have been severe, including intensified racial polarization, loss of support for public schools and higher education, and harsh policies toward low-income populations.
The last sentence strikes me as misleading and inappropriate (in multiple ways), but still the research is of very real interest. Via the excellent Kevin Lewis.