As I understand, Jefferson helped form the Democratic-Republican Party, from which the Democratic Party later emerged. The Democratic party presented it's first Presidential candidate in 1828. That candidate was Andrew Jackson. Here's my source. http://www.cnn.com/ELECTION/2000/conventions/democratic/features/history/
The Emancipation Proclamation was issued in 1862. To me, a 34 year old party is relatively new.
By the way, why on earth are you calling me "Marse"?