That would mean 5,000 kronor more per year for a family of two children.

"This could make it possible to buy a wristband for Gröna Lund, pay the fee for the football school or finally buy that Christmas present that is at the top of the wish list," said Social Democrat leader Magdalena Andersson during a summer speech she gave at Mosebacketerrassen in Stockholm.

The child benefit is currently 1,250 kronor per child. The Social Democrat election promise would mean an extra child benefit is paid twice a year, in December before the Christmas holidays and in June before the summer holidays.

Andersson and the party's economic policy spokesperson Mikael Damberg point out that recent years have been tough for families with children, with skyrocketing food prices, increased rents and more expensive mortgages.

"It is absurd that the current government has not prioritized an increase in the child benefit," Andersson said.

The Social Democrats say the additional child and student benefit payments would be introduced permanently.

Finance Minister Elisabeth Svantesson, of the Moderate party, has said that the Social Democrats would need to raise taxes to finance its election promise, which is estimated to cost the treasury approximately six billion kronor.

Damberg, the Social Democrats' economic policy spokesperson, said that his party has long included a child benefit increase in its budget motions.

In her Mosebacketerrassen speech, Andersson also said that if she is Sweden's next prime minister, her focus will be boosting the economy, combatting unemployment, strengthening household finances, protecting Sweden's security, and strengthening welfare.

She also repeated well-known Social Democrat election promises such as abolishing the qualifying period deduction for sick leave from work, making prescription medication cheaper, and improving pensions.

The Social Democrats also want to increase state subsidies to municipalities and regions in line with inflation. They say that this will, among other things, contribute to a reform for smaller class sizes for the youngest children.

The opposition has had a clear lead in the latest opinion polls, but Andersson warned her supporters not to take victory for granted.

"Our opponents will give us labels. Call us traitors," she said. "They will put all their energy into lying about our policies, who we are and what we stand for."