- Clinton outspent Sanders by a margin of three-to-one in Iowa.
- Clinton started airing TV ads in April. Sanders in November.
- Clinton is the most well-known woman in the world. Most Democrats didn't even know who Sanders was.
Here is a great video showing the building momentum among the volunteers.
I wouldn't put it past the Clinton campaign to surreptitiously support voter suppression in order to gain an unfair advantage.