I went to the first one. I'm in a Republican leaning county, and I was really surprised with the turnout in general. Ours had a pretty diverse range of ages, and I was more surprised by the number of seniors, as they're the ones I think of as being more conservative. Plenty were there with their teens or adult children and a good number of veterans too.
Our town has been in the national news for teens getting in a fight with the (out of uniform) police chief after the chief tackled and choked (allegedly) one of the teens, so at least a noticeable portion of our young people are willing to get involved.