2020 democratic hopefuls continue to visit key primary states

Bernie Sanders' presidential campaign became the first major-party campaign to recognize a union for its staff.
1:34 | 03/16/19

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Transcript for 2020 democratic hopefuls continue to visit key primary states
Now to politics and the 2020 presidential race. A flood of democratic candidates all trying to pull ahead of the pack. ABC's white house correspondent Tara Palmeri takes a look. Reporter: Tonight, a crowded field of 2020 democratic hopefuls hitting those key early primary states. Beto O'rourke barnstorming in Iowa, and already apologizing for a misstep that he made on day one of his much-anticipated entry into the race. My wife Amy in El Paso, Texas, where she's raising -- sometimes with my help -- 12-year-old Ulysses, 10-year-old Molly, and their little brother Henry who is 8 years old. Not only will I not say that again, but I will be much more thoughtful going forward. Reporter: The other candidates are elbowing to make headlines. Two-time presidential candidate Bernie Sanders out campaigning in Nevada after an accident in the shower left him with seven stitches on his head. His campaign making history by becoming the first staff to unionize. In New Hampshire, Cory booker already promising to name a woman as a running mate. If I have my way, there will be a woman on the ticket. Reporter: And Elizabeth Warren calling donors who made donations of $25 or less. It's Elizabeth Warren. Get out of town. Reporter: After vowing to reject money from PACS and federal lobbyists. Tom, all eyes are still on the last heavyweight hold-out, Joe Biden, who without even announcing is topping polls. Sources tell ABC news he's 90% there in deciding if he'll run.

This transcript has been automatically generated and may not be 100% accurate.

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