Is O’Rourke correct? Would El Paso residents vote in favor of tearing down the existing wall there?

I haven't seen any data or studies on that, but it wouldn't surprise me. There has always been a close relationship between El Paso and Ciudad Juarez. There was no wall when I lived there, and it wasn't a problem. In fact, there was a large road race called the Friendship Race that was held each September to celebrate Mexican Independence. It started at the large public park in downtown Juarez, ran through the streets and over the international bridge into El Paso, through the streets of El Paso, back across another international bridge, and finishing back in the public park. Hundreds of thousands of people turned out on the national holiday to watch. We need more celebrations and fewer walls.