Hillary is a flawed candidate period and the Republicans will drag this out all long as they can. How will it look when Hillary has to testify in the middle of the 2016 campaign?
Last time she had to testify about Benghazi she actually did fairly well and it improved her image. Also, I think it is getting a little ridiculous that a House Select Committee on Benghazi is turning into the political arm of the GOP. It's almost like Issa is still in charge of all these fake investigations that turn up no wrongdoing but still cost the taxpayers millions of dollars.