An Arizona combat veteran running for US Congress has suspended his campaign today after a relapse and a drug overdose. “Today, I have suspended my campaign for the US House of Representatives and am seeking treatment for substance abuse disorder. I will fully cooperate with local authorities on any matters arising from my recent relapse and overdose,” Chris Taylor, a Safford, Arizona, city council member, told CNN in a statement. The Arizona Republic reported Monday that Taylor was suspending his campaign after a heroin overdose last week.