It was more a North-South divide than a party divide.
http://en.wikipedia.org/wiki/Civil_Rights_Act_of_1964#By_par...
(Signed into law by a Democrat, incidentally)
> that it was Democrats who were the anti-abolitionist party?
And France had a Napoleon (III) at the helm, but that hardly means a thing today.
The Civil Rights Act of 1964
In the House:
- Southern Democrats voted 94% against it -- but Southern Republicans voted 100% against it.
- Northern Democrats voted 94% for it -- but Northern Republicans voted only 85% for it.
In the Senate:
- Southern Democrats voted 95% against it -- but Southern Republicans voted 100% against it.
- Northern Democrats voted 98% for it -- but Northern Republicans voted only 84% for it.
So, the strongest split wasn't party, but region -- the South was against it and the North was for it. But by party within either region, North or South, the Democrats were more for (or less against) it, while the Republicans were less for (or more against) it.
OTOH, the Southern Strategy was a direct result of Republicans realizing that Democrats were vulnerable in the South because the Democratic Party as a whole was no longer voting in line with Southern conservatives.