1) Bad paintings 2) Bad-mouths 3) Bedaubs 4) Besmirches 5) Blurs 6) Blurs by rubbing 7) Calligraphy problems 8) Campaign assaults 9) Campaign materials 10) Campaign mud 11) Campaign nastiness 12) Campaign staples 13) Campaign strategies 14) Daubs 15) Defames 16) Defeats utterly 17) Dirty attacks 18) Drags through the mud 1) Dabs 2) Daubs 3) Libels 
Smears is British slang for a window cleaner.