Democrat Senator Mazie Hirono walked up as the roll call of the vote for Amy Coney Barrett’s confirmation to the Supreme Court was read aloud.
Footage shows Hirono (D-HI) tersely saying “hell no” while giving a thumbs down during the vote.
Barrett was confirmed to the Supreme Court by a 52-48 vote Monday and was administered the oath by Justice Clarence Thomas.
Hirono had earlier tweeted about Judge Barrett’s perceived “radical views.”
She said last month that she would not support the nomination.