The Northeast supports the American System because of how the tariff makes their goods more appealing. This region would go for a candidate that's against slavery, wants public roads, and is for protective tariffs.
The South region was extremely against the American System because of the fact that they were paying for taxes on roads they couldn't use. They would go for a candidate that is for slavery, against tariffs, and prefers new national roads.
The West also supports the American System because they were able to trade their natural resources for goods from NE. The West region would strive for someone that is against slavery, goes for protective tariffs, along with national roads.