With early voting starting Saturday in Florida, a Miami-based group of community organizers and union members will be undertaking a major push across five of the battleground state’s cities to get voters to the polls. 

And this group—believe it or not—is a super PAC. Yes, one of the same committees that are often described as tools of the corporate and the rich and maligned for polluting the airwaves with negative advertising.

But Florida Freedom PAC is a partnership between Florida New Majority, a community organizing group that sprung up in 2009 to empower the state’s minorities ...