United States gubernatorial elections were held on November 7, 1978, in 36 states and two territories. The Republicans had a net gain of six seats, Democrats sustained a net loss of five seats, and there would be no governors of any other parties following these elections. This was the first year in which Illinois held a gubernatorial election in a midterm election year since 1846. The state of Illinois moved its gubernatorial election date from presidential election years to midterm congressional election years. This election coincided with the Senate and the House elections.