They will, they can't resist the political theater. They already said all would vote no so what difference will their absence make? They are in the minority. The vote can go on without them.
“Democrats”
There might be a few that are in the closet politically.
There might be DINOs as well as RINOs in the Senate.
There might even be a few Democrats that prefer Kavanaugh over Barrett.
If Barrett can protect children, she probably will.