One week before the Senate votes on Neil Gorsuch’s nomination, it’s unclear yet whether Republicans will have enough votes to end an expected Democratic filibuster.

Republicans, who have a 52-48 majority, need a total of eight Democrats to get to 60–the critical number required to end the filibuster.

If they don’t reach 60, they can still get around that filibuster, but it would require taking a highly controversial step to change the Senate rules, a move also known as the nuclear option.

Republicans already have two Democrats who will vote with them to end the filibuster, so they need six more of the remaining 10 undecided Democrats–as of Friday afternoon–to do the same and reach that 60 number.