In addition, Mr. Gething, 50, will be the first African American to occupy the position and the first Black head of state in any European nation.
When the Senedd votes on Wednesday, he is anticipated to be confirmed as the nation’s first minister.
Mark Drakeford, who has held the role since 2018, will be succeeded by him.
With 51.7% of the vote, Mr. Gething defeated his lone opponent, Education Minister Jeremy Miles.
Following the announcement of the results at a Cardiff University lecture hall, Mr. Gething stated: “We are turning a new page in the history of our country today. a history that we coauthor.