Updated

A Democratic presidential debate hosted this week by MSBNC was the lowest-rated of the entire election cycle, includes debates held by both parties, according to numbers released Friday by Nielsen.

MSNBC brought in only 4.5 million viewers, easily underperforming the previous low, which was the Democratic debate held in December by ABC News that attracted only 7.85 million.

Even the Republican Party's so-called "undercard debates," which featured the lowest polling candidates of the GOP primary, performed better than the showdown Thursday night between Hillary Clinton and Sen. Bernie Sanders, I-VT., on MSNBC.

There are a few reasons for the left-leaning cable news group's dismal showing, Politico argued.

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