Where was the Democratic party strongest in the late 19th century?

In the late 19th century, the Democratic Party was strongest in the South, where it dominated state and local politics following the Civil War and the Reconstruction era. The party's appeal was bolstered by its alignment with agrarian interests and its opposition to Reconstruction policies, which were viewed as oppressive by many Southern whites. Additionally, the Democratic Party gained support in urban areas in the North, particularly among immigrant communities and working-class voters.