Abraham Lincoln ran as a Republican against several opponents, namely Stephen A Douglas and John C Breckinridge.
here’s a video about Abraham Lincoln’s life:

The Northern states were: Maine,
New York,
New Hampshire,
Vermont,
Massachusetts,
Connecticut,
Rhode Island,
Pennsylvania,
New Jersey,
Ohio,
Indiana,
Illinois,
Kansas,
Michigan,
Wisconsin,
Minnesota,
Iowa,
California,
Nevada,
and Oregon
Abraham Lincoln was President of the United States.

The Southern states were:
South Carolina,
Mississippi,
Florida,
Alabama,
Georgia,
Louisiana,
and Texas.
These states formed a government with Jefferson Davis as President.