Related Clues:

• Spread, as finger paint
• Slur
• Campaign dirty trick
• Blurry spot
• Dirt stain
• Attack unfairly
• Dark mark
• Bit of negative campaigning
• Eraser mark
• Ugly kind of campaign
• Campaign ugliness
• Stain or smudge
• Messy mark
• Staple of political dirty tricks
• Campaign staple