Answer: Because, like it or not, if they didn't, there wouldn't be any Democratic Party representation at all.
In this conversation, progressives imagine the opposite despite the overwhelming election evidence in both Missouri & Kansas state houses wherein Republicans control a super-majority.
Take a listen . . .
In the months to come, the state legislatures in Kansas and Missouri will begin the once-a-decade process of redistricting. Gerrymandering is the latest evolutionary iteration of voter suppression. It isn't unique to the United States, but the control states have over the procedure makes the undertaking inherently more political here.