Then we must do it from the grass roots.
Dunno if you've taken a look at the Wisconsin board here lately, but it is very clear that there are two "Republican" parties in Wisconsin; the southeast Wisconsin conservaties and the outstate liberals (no, they're not moderates; they're out-and-out liberals). While the former has tolerated outstate Pubbies in the past, and indeed embraced outstate moderately-conservative Mark Green for governor this time around, the latter has made it clear they will not support anyone who so much as appears to be conservative, even to the point of delivering 4 more years of a very-corrupt and liberal Jim Doyle.