The primary has divided some of Nevada's most politically influential organizations. The powerful Clark County teachers' union, law enforcement groups and Emily's List are backing Cannizzaro, while the Progressive Leadership Alliance of Nevada and the Nevada State Education Association support Conine. 

There was also an eyebrow-raising dual endorsement from the AFL-CIO. It's the first time since the 2018 Democratic primary for governor that the organization — which represents more than 150,000 workers across Nevada — has endorsed two candidates in a statewide election. The Culinary Union also endorsed both candidates.