1. Second Party System circa 1837 - 1852
2. Whig Party Splits North - South
3, Northern Whigs Split into Conscience and Cotton Whigs
4. Democrats Split into Anti-Slavery (Barn Burners) and War Demos
5. Southern Whigs & Cotton Whigs defect to Democratic Party
6. Conscience Whigs and Anti-Slavery Democrats defect to FSP
7. Fusion parties further break-down the system early 1850s
8. 1854: Birth of the Third Party System and the Republican Party