1-minute voter guide: Denver's Referendum 310

How it works: A "yes" vote upholds the ban on flavored products like e-cigarettes and menthol cigarettes; a "no" vote repeals it.

Context: The law's backers say it protects young people from exposure to nicotine products, suggesting flavored tobacco is marketed to attract young consumers and create lifetime consumers.

• Denver Kids vs. Big Tobacco, the group advocating to keep the ban, is backed by dozens of nonprofits and health organizations, including the American Lung Association.

The other side: A petitioning process led by a coalition of vape shops called "Citizen Power," referred the measure to the ballot, criticizing the ban as an "attack" on the city's family-owned businesses.

• Vote NO on Referendum 310 is urging voters to repeal the ban, highlighting its economic impact.

Follow the money: The measure has drawn national attention, with billionaire Michael Bloomberg donating $2.7 million toward supporting the city's flavored tobacco ban.

• The Cigarette Store and Swisher International donated to the campaigns opposing the ban, records show.