More importantly the Republicans were founded for the express purpose of liberating blacks from their Democrat Party slaveowners.
AND the Republicans sacrificed with their blood with hundreds of thousands of Republicans dead or severely wounded, fighting the Democrat Party to free the slaves.
Amazingly 140 years later, the blacks are STILL ENSLAVED by the democrats, and the Republicans are still fighting for their freedom.
And they have learned well that "massa democRAT" is their friend and those who would free them are the enemy.