The High Court in London has dismissed a legal challenge against Boris Johnson's planned suspension of parliament.
Campaigner Gina Miller had initially brought the case, and was later joined by former British prime minister John Major in the action.
Those behind the case have already said they will appeal to the Supreme Court, with a hearing expected on September 17th.
The judge today ruled that the case can be immediately taken before the highest court.
Speaking after the court announced its decision, Ms Miller said she was "very disappointed" in the court's judgement.
She said: "As our politics becomes ever more chaotic, we feel it is absolutely vital that parliament should be sitting.
"We are therefore pleased that the judges have given us permission to appeal to the Supreme Court - which we will be doing.
"My legal team and I will not give up the fight for democracy."
A court in Edinburgh had previously ruled that Boris Johnson's decision is lawful, rejecting a bid by a group of 70 MPs to secure a temporary injunction blocking the bid.
An appeal is also being heard in that case.
Mr Johnson has insisted the suspension of parliament is to allow him to put forward his new government's legislative agenda through a traditional Queen's Speech.
Opponents of the move, meanwhile, have claimed it's an attempt to limit MPs' time to block a no-deal Brexit ahead of the 31st October deadline.