Those bishops are seeking some kind of test vote to demonstrate support for Rome.
An earlier test vote had drawn 74 supporters, but opponents stalled the measure.
This is commonly referred to in the news media as a "test vote".
There would be a test vote on the charges.
As part of the same arrangement, worked out last week, Republicans will have another opportunity for a test vote on Wednesday.
The Democrats want it because they sense that the steam will go out of the prosecution once the public sees a convincing test vote.
With many senators unaware of what they were voting on, he won a test vote, 52 to 48.
The coalition behind the Senate bill held on that final test vote against challenges from both the left and the right.
Late today, to set up a test vote, Democratic leaders moved to cut off the debate on the wildlife refuge.
"I want the story on that test vote Monday night."