John Locher/AP

Sen. Kamala Harris (D-Calif.) has dropped out of the 2020 presidential race, multiple sources report.

The Atlantic's Isaac Dovere was the first to report Harris had told staffers she was dropping out, and Politico soon confirmed the news, with Harris reportedly planning to release a video announcement later Tuesday. Harris is the highest polling candidate to leave the race so far, and she does so even though she had made December's Democratic debate stage.

Harris entered the 2020 race with high expectations, shooting up in the polls after repeated takedowns of former Vice President Joe Biden in debates. But her prosecutorial past raised concerns among the left wing of the party, and things got bleaker as she shed her early pledge to avoid taking money from PACs. Even as campaign-related tweets and posts rolled out on Tuesday, Harris cancelled a big-money fundraiser later that day, suggesting her campaign was coming to an end.