The question of how the Liberals should relate to SD has led to internal friction in recent years. Prior to last year's election, former party leader Bengt Westerberg announced that he intended to vote for the Center Party, and several others have also left the party in protest.
But over time, the criticism has fallen silent.
One of the few who chooses to openly fight against the Tidö cooperation during the Liberals' national conference this weekend is Sverker Thorén.
"To sit on the sidelines and watch this has been tragic," he says.
For almost 40 years, he has been involved in the party in the form of a member of parliament, a party board member and a high-profile municipal politician. Now he has traveled to Linköping to try to get the party to stop cooperating with SD.
"As a member, I have felt the need to speak my mind. So that people outside the Party and in the Party see that there are still those who feel this way.
The party board says no
In a motion that demands that L should leave the Tidö Agreement, he writes:
"After the last election, our party is bleeding credibility. The Liberals became the party that paved the way for a repressive, authoritarian, nationalist party with roots in fascist and Nazi organizations."
The Party Board proposes that the application be rejected.
"I think you need to relate to the reality that exists in the Swedish Parliament. Now we have ensured that there will not be four more years of chaos, says Gulan Avci, party secretary.
She emphasizes that the Tidö Agreement only applies to this term of office and that the Liberals will go to the election as an independent party in 2026.
But for Sverker Thorén, this is not enough.
"We need to say a lot more than that.