The problem for Harris to this point has been that she’s run a cautious, calculating campaign, as if she were the front-runner, when she really needed to run as if she were an insurgent, and her missteps — her failure to land on a clear, consistent message, her transparent efforts to appeal to all sides of burning policy questions such as Medicare for All, her gimmicky debate attacks — have led voters to see her as inauthentic. She may get another look from persuadable Democrats during the homestretch, but she’s going to need to give them the clear rationale for her candidacy that she has so far failed to deliver.

Kamala Harris 2020 Campaign: Not Dead Yet, But Lacking Clear Rationale | National Review

The rest of the article is snarky fluff the closing paragraph (above) is on point.