While Gallup typically places Barack Obama's approval rating higher than some other firms due to their methodology, it is worth noting that in their state-by-state breakdown of the president's popularity that Colorado is among the lowest in the nation. Only seven states polled by Gallup ranked Obama lower than Colorado and all of those states are very solidly in the Republican column in presidential elections (Wyoming, Alaska, Utah, West Virginia, Idaho, Montana, and Oklahoma).
As Gallup notes:
North Dakota also gave Obama his highest approval rating of any state he did not carry in the 2008 presidential election. Obama's lowest approval rating in a state he won is Colorado's 55%.