The Colorado recall election of 2013 was a successful effort to recall two Democratic members of the Colorado Senate following their support of new gun control legislation. Initially four politicians were targeted, but sufficient signatures could only be obtained for State Senate President John Morse and State Senator Angela Giron.

The National Rifle Association of America (NRA) is a gun rights advocacy group based in the United States. Founded in 1871 to advance rifle marksmanship, the modern NRA has become a prominent gun rights lobbying organization while continuing to teach firearm safety and competency. The organization also publishes several magazines and sponsors competitive marksmanship events. According to the NRA, it had nearly 5 million members as of December 2018, though that figure has not been independently confirmed.