Gov. Jerry Brown, a Democrat, has been in politics since the 1960s, and launched multiple runs for president himself.
In 1992, he ran as the outsider candidate -- chastising the incumbent parties that had "failed their duty."
"They've placed their own interest above the national interest," he said during the speech that kicked off his campaign. "They've allowed themselves to be trapped and in some cases corrupted by the powerful forces of greed. It's time for them to go!"
Today, Brown says that anti-establishment energy is central to the current presidential campaign -- not just for Bernie Sanders, he argues, but for Hillary Clinton and Donald Trump as well.
"Everybody who's running for office in some way has to capture the mood of discontent and skepticism about the incumbent party," he tells NPR's Audie Cornish.