More Democrats voted against it? If there were 100 Democrats and 10 Republicans, and 11 Democrats voted against it and all 10 Republicans voted against it, your statement would be correct but incredibly misleading. You may want to look at the overall numbers and percentage of votes.
Look up "Dixiecrats," who they were, what they stood for, and where they went after the Democrats wrote and approved the Act. Then, explain why they almost all eventually became Republicans.
I'll give Crispy Lips a pass since he hasn't been here all of the years. You? You don't get a pass, as I have discussed this at least 10 different times over the years. I believe one of the last time included links from National Geographic and Time stating exactly what I had been arguing on here for decades.
Yes, there were a substantial number of Democrats who didn't support it, just as there were Republicans. Where were all of those Democrats who opposed it from? I believe all of them, except for one, were in the south. It's why Dixiecrats came about as a party - because those southern politicians didn't support segregation. And what happened to all of those Dixiecrats? Almost all of them joined the Republican Party, as the Republican Party aligned with their racist views more than what the Democrat Party accepted.
Here is an easy-to-read map of which state Senators supported it. What do you notice? Almost all of the opposition was from the south, while the north overwhelmingly supported it. Now, tell me which party rules the north and which party rules the south now? That's not a coincidence. The current division by state is rooted almost entirely based on civil rights legislation of this period:
Great job listing names of
southern Democrats who voted against it. Care to mention where some of those politicians you named ended up as a party home? Doh!