Republican presidential candidate Mitt Romney visited a food bank in Colorado Springs that's working to help victims of the region's wildfires.Romney on Tuesday stopped by Care and Share to help box up food for firefighters and people displaced by the fires that have wracked the state this summer. He urged Americans to visit Colorado despite the fires to keep its tourism industry thriving. He toured the food bank and met behind closed doors with victims of the fires. Romney is set to fly to Houston Tuesday evening ahead of a planned speech to the NAACP annual convention on Wednesday morning.Monday, Romney held several private fundraisers and receptions in Aspen. The events were for people contributing between $2,500 and $50,000.Romney's last visit to Colorado was in May when he made a campaign stop in Craig. Romney spoke for about 15 minutes at Alice Pleasant Park, then shook the hands of supporters in the large crowd.None of those visits hit the heavily populated counties outside Denver where a large number of independent voters could determine who wins Colorado's presidential contest.Many experts say Colorado has become an important swing state that could decide who wins the White House in November.