A party leader debate in the middle of a term of office is not always very much to get excited about.

But the situation is different this time.

The issue of a no-confidence motion against the government has become highly topical and in tonight's debate, party leaders can take another step towards a government crisis - or try to disarm the issue.

The Left Party's party leader Jonas Sjöstedt has skilfully steered the talk before the party leader debate to deal with his demand for a declaration of no confidence in Prime Minister Stefan Löfven.

Sjöstedt has also received support from KD leader Ebba Busch and M leader Ulf Kristersson, who on Friday declared themselves willing to support his demand for a no-confidence motion.

SD leader Jimmie Åkesson is also prepared to bring down Löfven, but that message was more expected.

Sjöstedt demands an answer

Jonas Sjöstedt has demanded that Stefan Löfven in tonight's debate promise not to implement the inquiry proposal on labor law that is currently on the government's table.

It contains, among other things, more exceptions from the priority rules and that it will be easier for companies to lay off staff.

But Stefan Löfven will hardly be able to leave the messages that Jonas Sjöstedt wants.

In that case, his government base will crack.

Both the Center Party and the Liberals demand that the investigation be carried out.

Otherwise, they threaten to withdraw their support for Löfven and without it he can not rule further.

This means that Löfven can put his hope in the social partners.

If they resume negotiations, Sjöstedt can no longer pursue his demand for no confidence and Löfven is once again saved from a government crisis.

May lead to a by-election

Otherwise, Löfven may pray a silent prayer that the unholy alliance in the Riksdag will break down before it is time for a possible vote of no confidence.

The parties involved do not have much in common on the issue itself.

The Moderates and the Christian Democrats would like to review labor law and are in fact quite satisfied with the investigation proposal that exists.

The Left Party, on the other hand, sees the proposal as a frontal attack on Sweden's wage earners.

The Sweden Democrats never say no to overthrowing the government and from this, a majority has been formed that says they are prepared to remove Stefan Löfven and his ministry.

What happens next is shrouded in obscurity.

The parties that want to depose Löfven neither can nor want to constitute a common government alternative.

This means that a declaration of no confidence may well result in a by-election.

Can give bitter aftertaste

Tonight's debate will also show how combative the party leaders within the opposition really are.

The question is, among other things, how far Jonas Sjöstedt is prepared to go, well aware that a declaration of no confidence can pave the way for Ulf Kristersson as Prime Minister.

The question is also how Kristersson motivates that in this way he tries to stop a political change that his party has for decades tried to push through, and that he as recently as a week ago gave a completely different message on the issue.

Ebba Busch is partly in the same situation, but has a more marginal role and thus less to lose.

Still, this can give the debate a bitter aftertaste if the voters are given the impression that it is all mostly about a political game where the issues have fallen into the background.