His chances will be determined by what happens in redistricting.
I don’t see how it gets anymore favorable in redistricting, unless it picks up part of Dane county, which would only happen in a Dem gerrymander.
You don't technically need to split Dane to get a Biden seat out of WI-03, you can give it like Iowa and some or all of Rock which along with Eau Claire and La Crosse is enough to make it a marginal Biden seat while WI-02 takes in redder turf in the northeast along with Dane. Not sure it would be winnable for the decade or even in 2022 but it is possible.