from the Wilmot Proviso. Mostly Southern Democrats and Whigs supported the compromise, Northers from both parties and whigs mainly opposed the compromise. Charles G. Atherton and Samuel S. Phelps were the only New England Democratic and Whig Senators, respectively, to vote in favor of the Clayton Compromise bill. If Georgia's Alexander H. Stephens and seven other southern whigs voted like other Southerners, the Clayton Compromise would have survived and passed. 1850 Compromise The 1848 Compromise eventually failed which led to the Compromise of 1850. Compromise of 1850 added California as a free state and allowed popular sovereignty in Mexican Cession. There was also a more strict fugitive slave laws and slave trade was abolished in Washington D.C. Notes 7. The American nation, a history: from original sources by associated scholars - 1904 Oregon Territory Slavery in the United States History of United States expansionism