I know this is an older post, but after looking on Reddit I was able to find a solution that does not require you to live in Evergreen Harbor.
The neighborhood you live in must have a community voting board. None of them do by default except Eco Harbor. Put a community voting board in your yard and you'll then have the option to convince other people to vote on a NAP.
I personally didn't want to place the voting board in my yard since I live in Sulani, so I went to the beach that was in the sub-neighborhood as my family and placed the voting board there. Then, I visited that beach and was able to have the interaction pop up!
You will need to use bb.showhiddenobjects to find the Community Voting Board in buy mode.
I couldn't find the voting board in bb.showhiddenobjects, is it under debug or???
I don't think we can find the voting boards in Build/Buy any longer, even with cheats. You'll have to look for them in the Gallery instead and download a room or lot that contains one.
