Democratic presidential nominee Joe Biden's campaign has been narrowing down the list of possible candidates to serve as his running mate.

While it's anyone's guess who Biden will pick, Politico accidentally published an article on Tuesday declaring that Biden has chosen California Democratic Sen. Kamala Harris to be his running mate.

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Politico quickly scrubbed the article after it was published, but it's certainly plausible that insiders tipped-off Politico and gave them a heads up on Biden's VP pick.

Biden is supposed to be announcing his running mate next week, so it would make sense if his team told Politico a week early so they could prepare stories for the announcement.

Below is a screenshot of the original Politico story and then the scrubbed version:

Last month, The Week published a report saying Biden had narrowed his once extensive list down to four candidates.

All of the candidates are women and three of them are African-American.

Here are the 4 finalists:

• California Senator Kamala Harris
• Atlanta Mayor Keisha Lance Bottoms
• Florida Rep. Val Demings
• Massachusetts Senator Elizabeth Warren

The Week reported:

Biden has already promised that he'll pick a woman as his 2020 running mate and has been under pressure to choose a woman of color after a month of protests against systemic racism and police brutality in the U.S. More than a dozen people close to the Biden search process tell CNN that Biden has listened to that pressure: Just four women are reportedly left on Biden's shortlist, and three of them are Black.

Two former presidential contenders, Sens. Kamala Harris (D-Calif.) and Elizabeth Warren (D-Mass.), reportedly remain on Biden's list, and rounding it out are Rep. Val Demings of Florida and Atlanta Mayor Keisha Lance Bottoms.

Warren is seen as the most progressive of those reportedly on Biden's shortlist, and would likely signal that Biden is willing to be pulled to the left on some issues. Progressives have meanwhile been hesitant to root for Harris or Demings because of their histories as California's top prosecutor and the head of Orlando's police department, respectively.

Biden declared earlier this year that his VP will be a woman.

After vowing to nominate a black woman to the Supreme Court, Biden said during a Democratic debate: “Secondly, if I’m elected president, my Cabinet, my administration will look like the country, and I commit that I will, in fact, appoint a woman to be vice president. There are a number of women qualified to be president tomorrow. I would pick a woman to be my vice president.”

It seems like Harris may be the frontrunner given Biden has mentioned her name several times in recent months.

Biden previously said during an online campaign event that he’s coming for Harris.

Biden said: “I’m so lucky to have you be a part of this partnership going forward. Working together, we can make a great deal of progress. ... I’m coming for you, kid.”