Eight federal appellate judges confirmed, and a ninth on the way, mark the success of President Donald Trump’s campaign promise to make putting conservatives on the court a top priority of his administration.

Trump’s eight appellate court appointments are the most this early in a presidency since Richard Nixon, the New York Times reported.

The appointments are the product of an aggressive strategy led by White House counsel Don McGahn. McGahn and his team have focused on filling appeals court vacancies where Democratic Senators from Trump-voting states could be pressured to back nominees.

Senate Judiciary Committee Sen. Chuck Grassley (R., Iowa) has also been essential to the fast clip of nominations. In the past year, Grassley has organized three hearings with two appellate nominees, rather than the customary single nominee. Two-nominee hearings happened only three times total in the eight years of the Obama administration.