Related Clues:

• Plug, say, American convention
• Inadequate reason for copper to penetrate group in party
• Small group with unfinished purpose infiltrated by copper
• Small group, as lost in mountains
• Primary alternative
• Cold precious type starts creating unrest spontaneously in political meeting
• Meeting to select a US political candidate
• Two coppers arresting a small group of politicians
• Coppers arresting a second group of politicians
• Accountant heads for Uruguay, Columbia and America from political meeting
• Small group of like-minded politicians
• Accountant heads for Uruguay, Colombia and America from political meeting
• Closed political meeting
• Assembly, convention
• Faction starts to collapse acrimoniously: punch-ups on regular basis to follow!