On top of that, there were pictures of a really large crowd that was unable to get into the Ellipse. I would be so surprised if there were 100k people there.
The size of her crowds compared with Trump's.
The vast number of Dem volunteers vs Republican ones.
The huge number of donors.
The early voting advantage.
I think there's a lot of evidence of Dem domination, in spite of the polls. I think it's definitely a possibility that the methods the pollsters use are not very accurate in this cycle, as they have been inaccurate in many others recently. The last time they seemed reliable was, I think Obama 2008 when it was easy to predict nearly every state. Nowadays the pollsters cheat by calling the outcome as late as possible after early voting so they can say how clever they are. But the polls themselves don't cut it.