Stefan Hector is in charge of the police's efforts during the campaign season. He says police officers will be out in the open in Sweden's so-called "vulnerable areas", places where crime rates and poverty levels are often higher than normal and where many immigrants live. In these areas, people have been found obstructing others from voting.
"Of course we can't be in people's homes but where we can see it or predict it, we will be there," Hector said.
Another problem affects politicians themselves. During the past six years, more politicians say they are being threatened or made victims of crimes.
Susanna Trehörning, Säpo's strategic commander in charge of safeguarding the elections, said political violence is rare in Sweden, but she added: "We have had very bad incidents in Sweden and it's very important for us to make sure that doesn't happen again."
When it comes to the actual voting system and equipment - that is the paper ballots, ballot boxes and polling stations - Trehörning says they are fairly secure.