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% replaces any number of letters (la% - lake, lamp)_ replaces one letter (ca_ - car, cat)

Crossword clues for Campaigner's dirty trick:

SMEARING: Campaign dirty tricks
SMEAR: Dirty campaign trick
COVERT: Like a dirty-tricks campaign
SMEAR: Campaign dirty trick
SMEAR: Campaigner's dirty trick
SMEAR: Dirty trick on the campaign trail
SMEARS: Dirty tricks on the campaign trail