Assuming enough signatures are collected for a recall, there needs to be a candidate. Who's it supposed to be? Shouldn't the people asked to sign the recall petition want to know? Here's a little interview with former U.S. Rep. David Obey on the subject, and Obey himself has been suggested as a candidate. But look at him:
Slouching with his pot belly aimed at the camera and repeatedly scratching his ratty beard, he can't be serious about running. Why would Walker opponents want to set up a race that will give Walker a big platform for promoting himself unless the other guy (or gal) has a great fighting chance?
In the interview, Obey cites the names Tom Barrett and Herb Kohl. Barrett is the Milwaukee mayor who already lost to Walker (back in 2010). And Kohl is 76 and retiring from his not-too-onerous seat in the U.S. Senate. Assuming he'd run against Walker, how good a fight would Kohl put up against the 43-year-old governor who will be battling for everything he's worked for and defending himself after year's worth of over-the-top assaults on his integrity?
By the way, Obey is quoted — at the link — saying that the new Wisconsin law requiring that voters show an ID card "is not only a recallable issue; it ought to be an impeachable issue." You'd impeach elected officials for passing legislation? Ridiculous. Of course, if you had the votes in the legislature to impeach, you'd have the votes to repeal the legislation, so Obey is simply spluttering from his out-of-office dream world.
ADDED: Let me take Obey's nutty idea about impeachment and run with it. If we get a new governor through the recall of Scott Walker, the ouster of the governor ought to be seen as an impeachable offense. Let the Republican legislature impeach the new Governor Obey/Kohl/Barrett/Feingold. Why not? The Democrats have set the theme: Use anything and everything you can get your hands on to defeat your opponent. As one possible future governor likes to say: "This game's not over until we win."