The only reference to campaign material in the ON Municipal Act relates to polling places, i.e. you can't display them at the polls. There's nothing I can find about removal.
The 2014 Candidates’ Guide for Ontario Municipal and School Board Elections which isn't the official act says
So it hinges on Cambridge's rules, e.g. if there's a sign deposit to incent campaigners to remove their signs.
The 2014 Candidates’ Guide for Ontario Municipal and School Board Elections which isn't the official act says
Quote:The Municipal Elections Act, 1996 does not regulate signs. Your local municipality may have rules in place about when you can put up campaign signs, and how signs may be
displayed on public property.
It is your responsibility to ensure that your campaign signs are removed after voting day. Your municipality may require a sign deposit or have penalties for failing to remove your
signs. You should contact your local clerk for more information.
So it hinges on Cambridge's rules, e.g. if there's a sign deposit to incent campaigners to remove their signs.