Justice Samuel Alito’s sweeping and blunt draft majority opinion from February overturning Roe remains the court’s only circulated draft in the pending Mississippi abortion case, POLITICO has learned, and none of the conservative justices who initially sided with Alito have to date switched their votes. No dissenting draft opinions have circulated from any justice, including the three liberals.

That could explain why no second draft of Alito’s majority opinion has been distributed, as typically the two sides react to one another’s written arguments and recast their own.

As the nine justices prepare for their scheduled, private, closed-door conference this week, they face one of the greatest crises in modern Supreme Court history, with an internal leak investigation under way, an agitated nation focused on whether the constitutional right to abortion is about to be overturned, and some justices facing angry protests at their homes.

“This is the most serious assault on the court, perhaps from within, that the Supreme Court’s ever experienced,” said one person close to the court’s conservatives, who spoke anonymously because of the sensitive nature of the court deliberations. “It’s an understatement to say they are heavily, heavily burdened by this.”