Surrounded by her family, Sen. Kirsten Gillibrand (D-NY) announces that she will run for president in 2020 outside the Country View Diner, January 16, 2019 in Troy, New York. Drew Angerer | Getty Images

Sen. Kirsten Gillibrand, D-N.Y., reached out to top Democratic donor Bernard Schwartz to discuss the 2020 presidential campaign during the weeks before she announced that she would make a run at challenging President Donald Trump, CNBC has learned. Schwartz, the CEO of BLS Investments, spoke to Gillibrand over the phone in recent weeks about the idea of her running for president, according to a person with direct knowledge of the conversation. Gillibrand signaled to him that she was likely to enter the race, and Schwartz, who was a key player in Democrats' 2018 fund-raising efforts, encouraged her to make the move, this person said. This development comes as Gillibrand, like other prospective Democratic candidates, is trying to distance herself from being associated with big money in an attempt to show that she's going to build a campaign off of small grassroots donors. Gillibrand has touted her voting record against financial industry interests since CNBC first reported two weeks ago that she had been in touch with Wall Street and New York business leaders about gaining their support for a presidential run. Later, CNBC reported that Sens. Cory Booker, Kamala Harris and a group of governors considering running for president have also held talks with Wall Street executives about potential 2020 campaigns. Gillibrand announced that she would run for president during Tuesday night's episode of "The Late Show with Stephen Colbert."

A spokeswoman for Gillibrand's team did not deny the exchange in a statement to CNBC. "Kirsten has made clear that she is running for President, and as one does, she is reaching out to individuals from across the spectrum - whether they are civil rights advocates, prominent and diverse women leaders, LGBTQ rights advocates, entrepreneurs and job-creators, and many others - to seek their advocacy and support. Certainly, all other Democrats running for President will do the same," Meredith Kelly, Gillibrand's communication director told CNBC in an email. Schwartz declined to comment. At a Wednesday press gaggle in Troy, N.Y., Gillibrand was asked about the criticism she has received from the left over getting the backing of leaders on Wall Street since she first ran for Congress in 2007. "I think its important for people to know my values are never for sale and that's why I banned corporate PAC checks, its why I'm not taking money from federal lobbyists and its why I don't think individuals should have super PACs," Gillibrand said. She later listed all the legislation she has supported to regulate the financial industry, which includes voting in support of the Dodd-Frank Wall Street Reform and Consumer Protection Act in the wake of the financial crisis. Last year, she voted against a measure that rolled back some Dodd-Frank regulations.

Past support from Schwartz

While Schwartz did not commit to financially supporting Gillibrand's campaign for president during their discussion, he has been a major donor of hers since she ran for a seat in the U.S. House of Representatives. During her 2018 re-election campaign for Senate, Schwartz contributed $2,700 to her campaign, the most an individual can give to a candidate, during the primary and then the same amount during the general, according to Federal Election Commission filings. Throughout the 2018 midterms, Schwartz was one of the top five Democratic Party donors out of the state of New York, according to the nonpartisan Center for Responsive Politics. He contributed $2.2 million to various party causes last year. Former New York City Mayor Mike Bloomberg, who put up $110 million, and hedge fund billionaire Donald Sussman, were among the donors who ranked higher than Schwartz. His donations also went to the likes of likely presidential candidate Sen. Elizabeth Warren, the House Majority PAC, the Senate Majority PAC, the Democratic National Committee and the Democratic Congressional Campaign Committee. Schwartz also has ties to Democratic leadership. In a December interview with CNBC, Schwartz explained that he's been meeting with leaders, such as House Speaker Nancy Pelosi and Senate Minority Leader Chuck Schumer, to unify them under a consistent platform in the 2020 presidential election. Throughout these gatherings, Schwartz has called on leaders to encourage 2020 candidates to focus on key economic initiatives such as improving the nation's infrastructure, improving retirement pensions, education reform and economic equality for all. In the 2018 election, Gillibrand's prolific fundraising efforts led to her campaign bringing in $17 million. At the time, she raised raised just over $1 million from the securities and investment industry and raked in $2.2 million from lawyers and law firms. On the other hand, Gillibrand raised over 30 percent of her contributions in 2018 through small donors, totaling just over $6 million in checks worth under $200.

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