Susan Sandler is a San Francisco-based left-wing political activist and philanthropist known for her support of Democratic candidates and left-wing causes and organizations. Sandler and her husband Steven Phillips, who is also a left-of-center advocacy donor, founded the Sandler Phillips Center to advocate for left-wing causes. Sandler sits on the boards of several of the nation’s most prominent left-of-center non-profits and advocacy organizations, such as the liberal donor collective Democracy Alliance. She describes herself as the largest and earliest funder of Barack Obama’s 2008 campaign for President, as well as an early investor in the political careers of Senators Kamala Harris (D-CA) and Cory Booker (D-NJ). 
Sandler is the daughter of the late Herb and Marion Sandler, who were left-wing philanthropists and founders of the Sandler Foundation, where Susan Sandler is a board trustee. The elder Sandlers were the billionaire owners of Golden West, a savings and loans bank. The Sandler family is often noted for instituting and pioneering the aggressive lending practices that lead to the housing crisis of the late 2000s. Golden West was sold by the Sandlers to Wachovia for $24 billion in 2006, prior to the 2008 financial crisis.  The Sandlers made $2 billion from the sale of Golden West, giving away over $1.5 billion to form the Sandler foundation. 
Susan Sandler attended Stanford University and married fellow left-wing activist student Steven Phillips, a civil rights lawyer and Democratic Party activist who is a self-described student of “Marx, Mao, and Lenin” and wrote that his “political baptism was the Jesse Jackson 1984 Presidential campaign.” 
Phillips has a long history in left-wing organizing and politics; he was an elected member of the San Francisco Board of Education and served as board president. Phillips is also the founder of left-wing advocacy organization Democracy in Color. 
Political and Advocacy Activities
Susan Sandler followed in her parents’ tradition of financially supporting left-wing causes and Democratic Party candidates. In 2019, Sandler made $1 million in contributions to Dream United, a Super PAC promoting the Presidential candidacy of U.S. Senator Cory Booker (D-NJ).  Sandler notes that she was among the first donors to the campaigns of President Barack Obama, U.S. Sen. Kamala Harris (D-CA), and Booker. 
Sandler is a prolific donor to Democratic candidates, giving maximum donations to dozens of candidates across the country each political cycle. 
Sandler was a founding member of the Democracy Alliance (DA), the major liberal donor convening that included Mark and Susie Buell, Peter B. Lewis, and George Soros. Sandler and her husband Steve Phillips are highly involved with Democracy Alliance, with Sandler serving on the board of the organization.