Is this something you just made up?
the party of "tolerance."
As an interesting side note,the predecessor of the Democratic Party was the Whigs who were in favor of slavery...
Nope the Whigs were the predecessors of the Republican Party (mostly) and their opponents were the Democrat Party founded by Jackson.
It was anti-slavery for the most part and that "for the most part" was what brought it down. The party split on whether slavery should be allowed to expand in the US or not.
um.. no.