Canvased or Canvassed: How To spell?
The word Canvased is misspelled against Canvassed, which is past tense of "Canvass"
Canvassed has double "ss" is mispronounced as "s"Remember double 'SS' in between the strings canva & ed which should not be misspelled with single 'S'
Wrong Spelling:  canva-s-ed  Correct Spelling:  canva-ss-ed 
Explore spell check of Canvassed to spell without errors.