Moderate party leader Ulf Kristersson and Left Party leader Jonas Sjöstedt made separate calls on the government to provide extra funding to Sweden's municipalities and regions.
We're lacking resources in welfare and the judicial system. The problem is so big right now that we must do something," Kristersson told Swedish Radio.
Meanwhile, Jonas Sjöstedt warned prime minister Stefan Löfven that a failure to promise extra funding in Wednesday's party leaders debate in parliament would see him enter into talks with the Moderates and Christian Democrats.
The government's finance minister Magdalena Andersson said she could not interfere with the current spring budget process.