Has Hillary ever surged in polls DURING a campaign?
Uh, yes?
The polls showed the 2000 Senate election to be a dead heat. She won by double digits. She won NH in 2008 when every poll showed Obama winning easily. She skyrocketed up after the first debate and the Benghazi hearing. Earlier on the national polls were deadlocked, now she's up double digits. I'm sure there's more examples too.
She won a race in the state of New York with a "D" by her name... whatever,
I'm talking tend line momentum not she lost Iowa by 5 and won New Hampshire by 10 two weeks later before long term decline and loss, than she trended up after McCain rapped it up and GOPers crossed over.