The 1890 Delaware gubernatorial election was held on November 4, 1890. Incumbent Democratic Governor
Benjamin T. Biggs was unable to seek a second consecutive term in office. Former State Treasurer
Robert J. Reynolds won the Democratic nomination to succeed Biggs, and in the general election, he faced banker
Harry A. Richardson, the Republican nominee. In stark contrast to the
1886 election, the Republican Party fully contested the state's elections and a close contest ensued. Reynolds ultimately defeated Richardson by a narrow margin, winning by just 543 votes.