In this Sunday, March 15, 2020, photo, Sen. Bernie Sanders, I-Vt., with former Vice President Joe Biden, speaks during a Democratic presidential primary debate at CNN Studios in Washington. What might be the final showdown between the two very different Democratic candidates takes place Tuesday, March 17, 2020, during Florida's presidential primary. (AP Photo/Evan Vucci)
March 18, 2020
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March 18, 2020 4:13 p.m.
The Latest: Weld ends Republican primary challenge to Trump
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