Bernie Sanders holds campaign rally in Denver
DENVER -- Democratic presidential candidate, Vermont Sen. Bernie Sanders held a campaign rally in downtown Denver Monday evening. The event is Sanders' first visit to Colorado this campaign season. It began at 6 p.m. in Civic Center Park. His campaign stop comes as a new national poll finds former Vice President Joe Biden holding a comfortable lead over the rest of the Democratic field. But a separate survey of early voting states shows a closer contest between Biden and his two top progressive challengers.