In 1936 the county's isolationism gave a powerful vote to William Lemke’s Union Party, and apart from Harry Truman’s Farm Belt appeal in the 1948 election Scott County would turn Republican until another Catholic nominee, John F. Kennedy, returned it to the Democratic ranks. However, since the “Reagan Revolution”, Scott County has become solidly Republican voting, with no Democrat gaining a majority of the county's vote since Jimmy Carter in 1976, although Carter in 1980 and Bill Clinton in 1992 and 1996 won pluralities.