It doesn't surprise that a Democrat wouldn't understand the math.  You see, if 86 the counties with 83% of the voters have a 53-47% red advantage, but the 2 counties with 17% of the voters vote a 75-25% advantage for Democrats, that 50% of 17%  (8.5%)is more than the slightly more than 3% of 87% (2.67%) needed to swing the state blue.

Bottom line: Denver and Boulder are out of touch with most of the state.  Like everywhere else in the nation, it's an urban vs suburban and rural thing.  C Springs is an exception because it's so heavily influenced by the military, which leans heavily Republican.