This is the third in a series of race rundowns designed to give subscribers a quick snapshot of what's happening in each district in 2020. Throughout the cycle, watch for our detailed analysis of the most closely-fought races in our competitive race overviews. Individual race pages will be updated as developments warrant, and be sure to bookmark our ratings to keep track of the latest changes. 


CO-01: Diana DeGette (D) - Central: Denver Solid Democratic. This prohibitively blue Denver district got a whole lot more interesting in February when former state House Speaker Crisanta Duran launched a challenge DeGette in next June's primary rather than run for Senate. Duran, 39, is roughly the same age DeGette was when she was first elected in 1996, and after Reps. Alexandria Ocasio-Cortez and Ayanna Pressley toppled longtime incumbents in 2018, it's a race to take seriously.

DeGette has chaired the pro-choice caucus and compiled a reliably liberal voting record, so it's hard to see how Duran will run to her left. But so far, Duran is emphasizing generational change and congressional

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