There is a slight difference between vast apparent "factual" advertising posters on paid for billboards, and window posters with a colour and name on them.

I have to say if swing voters vote based on the colour that surrounds them, maybe they should not bother voting at all.
A vote should be an educated decision, not because a party is your favorite colour, or you saw lots of posters for them lol.

Buy a burger because you saw an advert by all means, but vote with your mind please people.

Maybe this is how the country gets in such a mess all the time