The Free Soil candidates won 10% of the popular vote in 1848 but no electoral votes, in part because the nomination of Van Buren discouraged many anti-slavery Whigs from supporting them. ... The Compromise of 1850 temporarily neutralized the issue of slavery and undercut the party's no-compromise position.
Original jurisdiction is the power to hear a case for the first time. Whereas "appellate jurisdiction" is the power to review the decision made by a lower court which may or may not have had original jurisdiction.
