Related Clues:

• Socialist, disparagingly
• Part of joint on floor, a little bit left
• One of 1 Across perhaps to fix end of boxing match
• Commie backer
• Red Scare epithet
• Socialist has fix on how fight can be ended
• Left-leaning (informal)
• Leftist, in 1950s slang
• Socialist knocks over fine drop of the hard stuff