I think that Ross was the most underestimated candidate this cycle. I (like many) thought she was pretty much just a sacrificial lamb at first.
Hagan, Cowell, and Shuler are probably regretting not running. Burr had some strong polling early on that likely scared them away, but now he's clearly no juggernaut.
Cowell and Shuler maybe...but idk about Hagan, given how campaigning to breaking point with practically everyone of big name publicly endorsing her and still losing [None to different from the Presidential Race right now, which is why I'm skeptical of Hillary winning now]
But wasn't Ross ahead last poll?
I also think had a bigger name run Burr would have taken this race seriously earlier rather than let Ross sneak up on him