The big-ticket event was held at West Hollywood’s private Soho House
The private club, more often the setting for decidedly non-political nightlife, is a members-only institution with another outpost in New York City.
Thursday's event was a $5,000-a-head reception, with a private party for donors at the $25,000 level.
Katzenberg, Spielberg and Geffen have a history of publicly supporting Democratic candidates and have hosted fundraisers for Bill Clinton and President Obama.
More to come…