Here's the second part of the Wisconsin legislative maps that I drew up, and on this one, we are moving over to the Senate side (where districts are made up of 3 grouped Assembly districts). Here's what the current (GOP gerrymandered) map looks like.
Seats voting Walker (GOP) 21
Seats voting Evers (Dem) 12
Walker win 0-5% 1
Evers win 0-5% 2
Walker win 5%-10% 5
Evers win 5%-10% 1
Walker win 10%+ 15
Evers win 10%+ 9
The tipping point seat went to Walker by 6.73% (District 24 in Central Wisconsin), a little closer than the Assembly, but not much closer.
And here's what my map looks like.
Seats voting Walker (GOP) 20 (-1 vs current)
Seats voting Evers (Dem) 13 (+1)
Walker win 0-5% 2 (+1)
Evers win 0-5% 1 (-1)
Walker win 5%-10% 5 (no change)
Evers win 5%-10% 3 (+2)
Walker win 10%+ 13 (-2)
Evers win 10%+ 9 (no change)
So a bit more competitive, and the median seat goes from GOP +6.7% to GOP 5.9% (and is now in the Appleton area). But still a tough hill to climb.
If you compare the two maps, you can see the big differences in geography, even if the GOP vs Dem mix isn't very different. I tried to keep districts contained to one county and nearby area if possible, which means that instead of 21 being a rural district and 22 being an urban Racine-Kenosha district, both are largely county-wide (and competitive) districts now.
Dave's redistricting app and do some work of your own.