Social media, TV commercials, debates and door knocking.

The political parties have many ways of reaching out with their messages.

So the question is whether the election posters fulfill any function in today's modern society.

Political scientist Sofie Blombäck at Midtuniversitetet in Sundsvall.

- They have existed since the birth of democracy and have of course been supplemented with a variety of other ways of campaigning, so they are not as dominant as they were perhaps a hundred years ago.

But for most voters, they are seen as a fairly obvious element of an election campaign, says Sofie Blombäck.