Joe Biden is the scheduled headliner at a Democratic Party dinner in Delaware, his home state, as the former vice president considers whether to make another White House run.
Others 2020 hopefuls — including Beto O'Rourke, the former Texas congressman who's just joined the crowded field — are visiting early voting states.
New York Sen. Kirsten Gillibrand is ending a two-day tour in New Hampshire. That's where Washington Gov. Jay Inslee is set to some stops in his first visit to the state since announcing his presidential run.
Gillibrand has championed public service, saying it "changes your life" and that such work could help address some of the problems facing the country today.
In Iowa, O'Rourke is scheduled to appear at three events, starting with a St. Patrick's Day road race. Vermont Sen. Bernie Sanders is giving a speech in Nevada.
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This story has been corrected to reflect that Biden is a former vice president, not the current vice president.