RadioOnFire.com - CNN is hosting the second set of Democratic presidential debates Tuesday and Wednesday, taking place in Detroit. 20 Democrats will take the stage over two nights. The first night will, for the first time, offer a match-up between Massachusetts Sen. Elizabeth Warren and Vermont Sen. Bernie Sanders, the two top progressives in the Democratic primary. The second night will offer a rematch of former Vice President Joe Biden and California Sen. Kamala Harris, whose clash over race became the most closely watched moment of the first round of debates.
For a large part of the Democratic field outside of the top-tier candidates, the pair of debates will be one of the last chances to make an impression on a national audience. The Democratic National Committee raised the threshold to qualify for the fall debates, meaning many of the candidates run the risk of not making the stage in September and October. Here's how to watch: When are the debates? CNN's Democratic presidential primary debates will be held on Tuesday, July 30, and Wednesday, July 31, starting at 8 p.m. ET and ending around 10:30 p.m. ET.