WATCH: Arizona Senate debate between Mark Kelly and Blake Masters
Arizona's Senate race is one of the most closely watched heading into November as control of Congress is up for grabs.
Sen. Mark Kelly, a Democrat and former astronaut, is debating Republican nominee Blake Masters and Libertarian candidate Marc Victor on Thursday night in Arizona in one of the country's most closely watched U.S. Senate races.
You can watch the debate, hosted by Arizona PBS, in the player above starting at 9 p.m. ET.