Differences between Southern Whigs and Democrats in the Antebellum Era

Good afternoon everyone. I was wondering what you think were the differences between Southern Whigs and Democrats in during the Second Party System I know the Democrats were for strict construction and limited government. While the Whigs were for loose construction and government involvement with the economy.

However I wanted to know if and what differences they had over sectional issues such as slavery. It seems that both parties tried to one up eachother over loyalty to slavery but other than that were their any differences between the two parties?