Tennessee embedded late-week primaries into the state constitution in 1796, and Politico reported in 2014 that historians don't know why. Tennessee and Hawaii are the only states that don't hold all of their primaries on Tuesday, according to Politico. I asked Grok for more information:Researchers, including Tennessee State Librarian and Archivist Charles Sherrill, have examined the constitutional convention journals and found no explicit explanation for choosing Thursday. The primaries for governor feature a slew of Democrats running to replace Gov. On the Republican side, Sen. Marsha Blackburn (R-Tenn.), Rep. John Rose (R-Tenn.), and State Rep. Monty Fritts (R-32nd District) are all running on solidly conservative platforms.