The measure would apply to all commercial areas of the city and would be enforced between 7 a.m. and 10 p.m.
Mayor Tom Bates says the measure is not an attack on the homeless.
"Sometimes there will be so many people sitting on the sidewalk that you can't even use the sidewalk," Bates said. "And it also puts a lot of people off when they see people just sitting around on the sidewalk."
Bates says there are plenty of benches to sit on. If approved by voters, those violating the ban would face a $50 fine or community service.