Why would you think that? If someone with the liberal record of Romney can herd conservatives, even JimRob of all people, into voting for him, there is no reason for the establishment to believe conservatives won't bend over and vote for Emerson.
Believe it or not there are some in her District who swear they will not ever vote for Emerson again. Personally, I haven’t voted for her since 2006, I just leave that part of the ballot blank. I don’t know what I’d do if she is the chosen one.