Which candidates are most likely to take a risk in 1st Democratic debate?

In Miami, a crowded stage is set for the first debate of the 2020 Democratic presidential primaries. With Sen. Elizabeth Warren of Massachusetts the only participant polling in double digits, many candidates see the event as a public debut to Democratic voters, 84% of whom haven't yet chosen a candidate, according to polls. Lisa Desjardins and Stu Rothenberg of Inside Elections join Judy Woodruff.

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