Whanganui District Council has been speaking to election candidates over erecting campaign billboards too early.
At least one candidate, National Party contender Harete Hipango, has displayed a mobile hoarding in various locations around the city in what may be a breach of electoral laws.
The Electoral Act only permits billboards from two months out from the election, which is on September 23. That means Saturday, July 22, was the first day that such hoardings could be erected.
Ms Hipango's billboard is mounted in a trailer which has been parked in Heads Road and Great North Road among other locations. The law does not seem to make any distinction between billboards planted in the ground and those that are mobile.
A spokesman for the Electoral Commission said local councils could set rules around when and where election hoardings could be placed in the district, but not all councils did so.