That's in Wisconsin isnt it?There’s a serious gerrymandering problem currently favouring the GOP at both state and federal level which may may be resolved by a case currently being considered by the Supreme Court.
Viceland had a nice documentary about it. The GoP have software that models what way you need to distribute to get the results you need. They suggested it was a factor in the Dems losing states but I wonder about that. Virginia might put the lie to that