- The unseating of John Boehner as House Speaker.
- The failure of Jeb Bush and some other establishment candidates to have their campaigns gain traction.
- Seeing Hillary Clinton's campaign struggle under the perceived pressure from scandal after scandal.
After the 11 hours she spent answering the committee's questions she walked away the victor, even raising her hand as a sign of success as she left the hearing and then holding a celebration that night. She knew that any impact on her was now past and her campaign would not have to worry about it.
And contrary to those who think Ted Cruz could beat her, he has problems that Clinton will use against him and, I believe, would keep him from winning. (Keep watching, I'll write a post on that shortly.)