Rate Colorado in 2020

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What would it take to make CO back to a light red state again?

The last time Republicans won CO, they won the suburban Denver counties of Jefferson, Arapahoe, and Broomfield. In fact, those counties (or their equivalent areas) used to vote R for many decades (the only time they went D between 1940 and 2004 was in 1964). If the Republicans can find a way to flip these counties back, then they can probably win back CO.