Twice I stood in the Washington Mall for a Cause. Twice I thought the numbers were WAY off, I had an engineer take steps, and count how many meters long and wide, and how many people stood in a sq meter. Maybe a few people stayed home thinking it would rain. MOST people who support Trump were at WORK. Not the welfare recipients free cell phone crowd that left litter at the Obama event.
Another reason, the SRO rallies were local. Supporters could drive, maybe a free carry state.
A lot of us CCL refuse to visit slave states, especially considering how violent they are and have been for those of us wearing red caps.