again.... the politics of abolitionism was more of a north vs south thing. not a party thing.
The republicans, as noted in the very source you linked, were founded in the north. The northern states generally did not rely on slave labor and their economy was not reliant on it, in the way that it was in the southern states.
as republican base's shifted south and they became more involved in southern industry... their attitudes towards slavery, civil rights, and all that began to change. The two parties flipped positions, with democrats becoming stronger in the north also becoming influenced there. Civil Rights and simply not being assholes has always been a north vs south issue, not one of parties.
Well…. You can eat a urinal cake. I’m not sure why you’d want to, and it most certainly wouldn’t be all that fun.
But you could.