Washington (CNN) The force behind Texas Democrat Beto O'Rourke's record-breaking online fundraising efforts is moving into Sen. Kamala Harris' orbit ahead of her potential 2020 presidential run.

Democratic digital consultant Shelby Cole is joining Authentic Campaigns, the firm founded and led by Mike Nellis, who is Harris' longtime top digital consultant. The move positions Cole to play a major role if the California Democrat runs for president.

Nellis confirmed Cole's hire.

"Shelby did tremendous work for Beto O'Rourke and was a big part of the reason that he raised so much money and engaged with so many people in Texas and across the country," he said. "She's an amazing digital strategist and I'm really excited to be working with her again."

O'Rourke's $70 million online fundraising haul in the Texas US Senate race -- largely through an email and digital program that Cole spearheaded -- made her an emerging star among Democratic consultants. She is leaving Middle Seat, a digital consulting firm run by former senior staffers for Sen. Bernie Sanders 2016 presidential campaign.

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