Not to sound dumb, but was there a Libertarian running with Walker and Warnock? If so, it will help Walker.
Yes, there was last-minute Libertarian candidate in the midst of all this...and I think now that the third party is not involved, it will help Walker.
At least, it traditionally does help the GOP when the third party has to drop out. However, the Libertarian in question is a former Dem so I think it’s less of a sure thing that his voters will go to Walker.
Most of them probably won’t vote, but hopefully those that do will go to Walker.