Vice President Kamala Harris (D) cast her eighth tie-breaking vote in the Senate on Wednesday to confirm Jennifer Ann Abruzzo as general counsel of the National Labor Relations Board. The Senate voted 50-50 along party lines.

Harris previously cast tie-breaking votes related to the confirmation processes of Kiran Ahuja for director of the Office of Personnel Management and Colin Kahl for under secretary of defense for policy.

In the past four decades, vice presidents have cast a total of 40 tie-breaking votes. Vice President Mike Pence (R) cast the most during this time period with 13 tie-breaking votes.

John Adams cast the first tie-breaking vote on July 18, 1789. In total, there have been 276 tie-breaking votes from 37 vice presidents. Twelve vice presidents, including Joe Biden (D) and Dan Quayle (R), never cast a tie-breaking vote during their time in office.