This didn't stop the Whigs from being replaced by Abraham Lincoln's party. They were the Democratic Party of the time, a fair bit of which didn't care about slavery. Many former Whigs got frustrated with that, and left to form a party that would be opposed to slavery.
A major party has died, and we can do it again.
I call them death camps or trafficking centers. In a decade, we will be formally identifying and labeling the specific purpose of these places with accuracy. Unfortunately.