Answer:
Southern Democratic Party
Step-by-step explanation:
Towards the 1860 Presidential election, the Democratic party was split into two between North and South forming new political parties known as Northern Democratic Party and Southern Democratic Party.
The main reason for the split was based on the issue of slavery, where the Northern part is anti-slavery, and the southern part is pro-slavery.
Hence, in this case, the correct answer is "Southern Democratic Party."