The nationalist Sweden Democrats had seized the chance to call the vote last week after the formerly communist Left Party withdrew its support for the center-left government over a plan to ease rent controls for new-build apartments.
Lofven’s shaky minority coalition with the Green Party has relied on support in parliament from two small center-right parties and the Left Party since a tight election in 2018.
With parliament deadlocked, it is not clear to whom the speaker could turn to form a new administration, while opinion polls suggest the center-left and center-right blocs are evenly balanced, meaning an snap election might not bring clarity.
A new government — or a caretaker regime — would only sit until a general election scheduled for September next year. It is the first time a Swedish prime minister has ever been ousted by a no-confidence motion put forward by the opposition.