For years, Harvey Weinstein, a film and television producer at the apex of the American entertainment industry, has lavished money and attention on the Democratic Party’s biggest names and causes.

Mr. Weinstein has given more than $1.4 million to candidates, parties and political action committees since 1990, Variety reported, citing figures from the Center for Responsive Politics. Among his biggest beneficiaries are President Barack Obama, whose daughter was an intern with Mr. Weinstein’s company this year. At a career workshop for high schoolers at the White House, where Mr. Weinstein was a guest several times, Michelle Obama called him “a wonderful human being, a good friend and just a powerhouse.”

Mr. Weinstein is also a yearslong friend of both Bill and Hillary Clinton, for whose 2016 presidential campaign he was a major contributor and driving force, holding a fund-raiser in his home at one point. He’s raised money for Planned Parenthood, helped endow a faculty chair at Rutgers University in Gloria Steinem’s name and distributed a film, “The Hunting Ground,” about campus sexual assault.

But while Mr. Weinstein’s stature as a liberal lion grew, so did the number of accusations of harassment of female employees, actors and job applicants, The New York Times found. On Thursday, a Times investigation described in sickening detail how, over three decades, young women have accused him of sexual harassment and unwanted physical contact, reaching at least eight settlements with him.