In all honesty, probably right after the 2022 midterms. If they do it before then it will prove how jacked up they are and hurt them at the polls. They'll want to do it right after, though, to give Kamala as much time in office for the MSM to gen up some fake street cred in office before 2024.
Trump would still crush either one in 2024. If we don't f' this up, we'll have both houses & the white house Jan 2025.