A picture is worth a thousand words.
The pic on the left was taken by Tammy Butler and posted to Twitter (thanks, @tbutlerrealtor!). It shows the half-empty Duke Energy Center in Cincinnati, Ohio where Hillary Clinton delivered remarks to the American Legion regarding national security this morning.
The pic on the right was posted by Sundance at TheConservativeTreehouse.com. It was taken at the raucous Arizona event this evening at the Phoenix Convention Center where Donald Trump *ahem* clarified his stance on immigration reform.