The Life of Abraham Lincoln

Why would a writer with seemingly intellectual superiority of the English language, abuse their credibility by using the word "democratic" incorrectly? The word "democratic" is a process, not a party; thus the Republican party and the Democrat party both are supposed to adhere to the principles of being democratic; combining "all" the people. It is tiresome to read learned people, writing incorrectly, and abusing the intelligence of people not so adept in understanding. Thus, It prevails upon me to conclude a bias is thought or insinuated. Please, I implore you to write responsibly, and accurately, especially for those with learning difficulties. Nailbreak