Sen. Susan Collins, who had been the last undecided Republican vote on Supreme Court nominee Brett Kavanaugh, announced Friday she will vote in favor of President Donald Trump's pick, probably ensuring his confirmation when the full Senate holds the final vote on Saturday.

Only one Republican, Sen. Lisa Murkowski of Alaska, is expected to vote against Kavanaugh. If that holds, the GOP will have 50 votes in favor and Vice President Mike Pence will break the tie for Kavanaugh if there are 50 votes against him.