I think he has until Sept 25 to withdraw. McCaskill is going easy on him sticking to positive ads about herself until Sept 25 when all of her ads are going to be negative on him. I think he blew himself with his rape comments and the RNC can play chicken with him and not give him any money to try to get him out by the deadline so they can get a candidate who can win.If he does not withdraw, the RNC should not give McCaskill a free ride and they should start funding him to run negative ads vs McCaskill so long as he agrees not to tie himself to the national ticket in the ads. They do not need the lead weight.IMHO
Whatever damage was done by the comments has been done. Just like Rush's "slut" comments which were still being referred to at the DNC. No matter what happens with his race, him dropping out, the funding, etc., the Dems will continue to use both his and Rush's comments to associate with Republicans wherever they think they can get an advantage. Since this requires them to falsely twist his words, he is a little-known person nationally, and the comment has no connection at all to any sort of Republican platform or policy, there is little traction the Dems can get out of it, so no matter what it won't be heard about much more.