Denver Flavored Nicotine Ban Faces Voter Showdown This November In what is being called one of the city's most expensive races on this year's ballot, Denver voters are leaning heavily toward keeping the city's ban on the sale of flavored tobacco, Denver Vape Shops Face Cloudy Future After Election Loss Referendum 310 has strong support in early returns. Voters in Denver appear to support a ban on flavored tobacco products. The ban was enacted less than a year ago by Denver City Denver Flavor Ban Pushes Vapers to Suburbs Nicotine Insider Vape shops challenge Denver's flavored tobacco ban in court Colorado Politics