One Left-Wing Party (just cause)

Socialist Labor Party - Founded in 1877, the SLP is a militant democratic socialist party. More moderate members of the SLP bolted to create the Socialist Party USA in 1901. The SLP ran Presidential tickets in every election between 1892 and 1976 (the SLP's final presidential candidate won 9,600 votes in the 1976 race). The high cost of fielding a Presidential ticket and restrictive ballot access laws caused the SLP to abandon future Presidential races in favor of nominating candidates for lower offices. The SLP -- which bills itself as the party of "Marxism-DeLeonism" -- still fields a few local candidates (mainly in New Jersey). The site features party history, info on Daniel DeLeon, a Marx-Engels archive, links and more. The SLP newspaper The People, first printed in 1891, also publishes regularly updated online editions. Thought I should add at least one Socialist Party.