Round two of the Democratic presidential primary debates is set to get underway, with candidates facing off on back-to-back evenings on Tuesday and Wednesday on CNN.

Candidates will focus on using the precious few minutes of debate time they’ll have to make a lasting impression on the biggest audience some of them will see. After these debates, candidates will have to meet thresholds for donor figures and polling levels that are twice as high as they were for the first two debates.

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