The Democrat Party has been a criminal enterprise since its inception in 1828, thriving by calling itself the party of the “common man.” Following the party from the beginning is a compendium of corruption, deception, intimidation, kidnapping, slavery and murder. It is a party based on patronage and began with a very effective political machine that has evolved into the most effective vote corruption juggernaut in history. All of the most corrupt regimes in American history were Democrats. Anyone can look up all of that stuff.
Lincoln founded the Republican Party in part as a response to that corrupt enterprise. The Democrat Party founded the KKK to intimidate freed slaves from voting Republican, and in perfect consistency with its history, found its only recourse to the appearance of a principled party was to slander Republicans for slavery and racism - just as it continues to do about everything it does to plunder America for money and power.
Republicans pledge to defend the Constitution. Democrats accuse Republicans of everything except that, and the dumbest Americans fell for that and still do.