Kansas's 4th Senate district
| Kansas's 4th State Senate district  | |||
|---|---|---|---|
| Senator | 
  | ||
| Demographics | 26% White 35% Black 29% Hispanic 5% Asian 4% Other  | ||
| Population (2018) | 74,219 | ||
Kansas's 4th Senate district is one of 40 districts in the Kansas Senate. It has been represented by Democrat David Haley since 2001. It is the most Democratic-leaning Senate district in the state.