The final vote to confirm Kavanaugh will be held on Saturday.
The Senate is voting on whether to formally end debate on Judge Brett Kavanaugh's nomination to the Supreme Court.
Friday's vote will be a crucial test to gauge if he has enough support to win confirmation next week, tipping the Supreme Court to a conservative majority.
As a practical matter, the parliamentary move could force senators to show where they stand. If 51 vote to stop debate, Kavanaugh could be confirmed as soon as Saturday. -Philadelphia Inquirer