When the Dems are forced in that corner they will circle the wagons around her. Right now many will dump her for Bernie. Justice delayed is almost always justice denied.
Really, the most that could reasonably be expected is that he'd put together something that would be very embarrassing for the Administration. And that's only if he could get key people to talk.
I just find it incredible that people are blaming the delays on the only person still digging into this (remember the Senate issued a couple crap report years ago), rather than on the Administration that has done everything in its considerable power to stonewall the investigation. Most people would have given up in frustration. Gowdy is still benging away. I'm going to wait to read the final report when it is issued before I accuse him.of working for the other side.