The new plan will make some changes to the current Senate bill using the reconciliation process to avoid a filibuster in the Senate. Only 51 votes are needed for reconciliation compared to the ordinary 60 votes to squash a filibuster. However, not everything can be pushed through using reconciliation. A law known as the Bryd Rule requires that only things that are not considered extraneous to the bill can be considered under that procedure.
Passage of health care reform would likely come as a big boost both for the administration and Democrats in general.