There’s been lots (and lots) of action in the 2020 Democratic primary race over the past month, but few actual changes.A handful of candidates have either announced exploratory committees (Elizabeth Warren, Kirsten Gillibrand) or have outright announced that they are running (Julian Castro).

But aside from Warren (potentially), the candidates who comprise the top tier — at least at this early stage of the race — are still on the sidelines. Former Vice President Joe Biden seems to be moving toward a candidacy, but has given no indication of when he might make a decision.

California Sen. Kamala Harris is an all-but-announced candidate but continues to play somewhat coy about when she will officially enter. Former Texas Rep. Beto O’Rourke is in soul-searching mode at the moment.

Those decisions — we’d be surprised if any of the three didn’t run — have the potential to shake up the race in a meaningful way. At the moment, however, the movement in the 2020 field is all in the second tier.

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