Clinton will win in Colorado according to the PredictWise prediction market
The PredictWise prediction market expects, with a probability of 81.5%, that Clinton will win the vote in Colorado. On September 18 her chance of winning the vote in this state was only 76.0%.
Colorado is traditionally a purple state, where the Democratic and Republican candidates have often achieved similar levels of voter support. Hence, the election outcome in that state is regarded critical in determining which party will win the majority of electoral votes.