It seems like gun control issues haven't been pushed much in AZ compared to a lot of other states, but that's probably because we have such a deeply entrenched gun culture. Most people associate pro-gun with Republican/Libertarian, but so many Democrats that I know in AZ are deeply into guns as well. This next election cycle looks a little different from the likes of Mark Kelly running with his strong anti-gun stance, and all of the money getting invested in AZ to elect "common gun sense candidates" as they put it in the article.
They're trying to raise a grassroots army to take away our gun rights. That just means that our grassroots army has to assemble as well and come out to make our voices heard.