No it isn't.
Am I still the only one on this site that knows there were zero, ZERO, Z-E-R-O Democrats in the Confederacy, that northern Dems separated with their southern counterparts over the issue of slavery, even fielding their own presidential candidate in 1860, and that Lincoln was so racist, he makes Cult45ers look like the non-racists they pretend to be?
SOUTHERNERS were the slave owners - not voter ID required to own them, and they, coincidentally, were the ones that (mostly) split off into the Confederacy, NOT the DNC. There wasn't some mass migration based on party affiliation back then.
Legislation wasn't so much split between parties as it was, you guessed it, North and South, then and, you guessed it, now.
My folks were Democrats since the 60s, and not only were they not Southerners, they woulda been on the receiving end of Jim Crow if they were. KKK? Sure, if they didn't mind getting BBQ'd Texas style, speaking of which, was the birthplace of the Lily-White Movement Republicans in the 1880s. Do you wanna guess why they were called "the Lily-White Movement Republicans"? From there they spread throughout the South, because the end of Reconstruction isn't the only reason why the GOP's testes suddenly became undescended back then.
Bottom line, concede to the lie, you're backing the lie.
The proponents of the lie aren't going to compromise in return (what is it with Democrats and this notion that by scratching Republicans' backs, the Republicans will be just piling the lipstick on their puckers and aiming at Democrat butt to thank em?)
Like their God, Lincoln, most Republicans back then like most Democrats and Whigs, etc, were racists. Slavery was a moral issue, not an equality one. Sure, there were exceptions, but that's all they were. They weren't a bunch of Bohemians in Greenwich Village struggling to get 'Blacks' and Native Americans and women and Mexicans and all the rest of the marginalized equal rights. The Stonewall riots weren't something they were plotting since way back then either. Nor were the rest of the 1960s. Racism was the norm then just like it's the norm for Vegans now to not want freed cattle to come eat their azaleas and tulips and cool off in their pools.
#therewasneveraswitch