An Elon Musk sign sits in a bush the federal courthouse during proceedings in the trial over Elon Musk's lawsuit against OpenAI in Oakland, California, on April 30, 2026. Josh Edelson | AFP | Getty Images A progressive wing of the Democratic Party in Delaware is endorsing primary opponents to six incumbent Democratic state lawmakers who pushed for a change to the state's corporate law that benefits executives and billionaires, including Elon Musk and Mark Zuckerberg , who have faced shareholder litigation in the state. The Delaware Working Families Party told CNBC exclusively that it is endorsing six Democratic candidates in primaries against fellow Democratic incumbents who supported SB 21. The measure became law in 2025 and was dubbed the "billionaires bill" by opponents.…