PHOTO That Should Worry the Clinton Campaign

Democratic presidential candidate Sen. Bernie Sanders, I-Vt., speaks at a rally, Sunday, Aug. 9, 2015, at the Moda Center in Portland, Ore. (AP Photo/Troy Wayrynen)

The photo above is what 19,000 people packed into a basketball arena to hear Vermont socialist/independent Sen. Bernie Sanders looks like.

What you don't see are the 9,000 other people who couldn't get into the arena but listened on loudspeakers outside.

That was the crowd that gathered on Sunday in Portland, Ore., to hear Sanders speak -- the largest gathering of a presidential bid that has made its name on its big crowds.

via Chris Cillizza