Anyone wanting to conduct polls, surveys, or telephone canvassing needs to read the rules about doing these things. There is also information on election signage and promoter's statements. If in doubt, you can ask the Electoral Commission for advice.
Any person can ask the Electoral Commission for advice on whether an advertisement constitutes an election advertisement under the law. The advisory opinion is not a binding ruling or legal advice.
An election advertisement, irrespective of when it is published, must contain a promoter statement.
Canvassing, or a survey or poll that can reasonably be regarded as encouraging or persuading voters to vote a particular way (such as a push-poll) may be an election advertisement under the Electoral Act 1993.
When, where and how signs, including election signs can be displayed is the responsibility of local authorities, not the Electoral Commission.