Washington (CNN) Montana Gov. Steve Bullock got former White House communications director Anthony Scaramucci to record a video saying he is "100%" behind "Steve B" by paying $100 through a video-sharing website.

Bullock, a Democrat who is running for president in 2020, tweeted on Thursday: "Mr. Scaramucci didn't know the source of the $100, but he allowed it to enter his wallet despite the potential consequences -- just like how our broken campaign finance system allows Dark Money to enter our elections & influence our politics."

The governor used a website called Cameo, which allows users to buy personalized messages from certain celebrities and public figures; users can request anything from birthday messages to marriage proposals.

After getting the video, he tweeted it "You know what's really spooky this Halloween? The fact that a former Trump White House Communications Director will say anything you ask him to for $100."

In the video, Scaramucci declares his support for a man named "Steve B" who is in a "tough race"

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