Vermont Senator Sanders first rallied in San Jose, then he showed up as a surprise in San Francisco at a labor rally. He was also scheduled to speak in Vallejo in front of a crowd of thousands.
RELATED: Bernie makes surprise appearance at San Francisco labor rally
Sanders started his California visit in San Jose Wednesday, hoping to convince voters that he's the only candidate who can defeat Republican Donald Trump this fall.
Under the California sun in San Jose, Sanders made his case for the White House.
"At the end of the day, what is most important for our lives is to see that love always trumps hatred," Sanders said.
Speaking to a huge crowd at the Santa Clara County fairgrounds, Sanders made no mention of his primary opponent Hillary Clinton.
"We have had to take on the political establishment, in every state, in every state that we have run in," Sanders said.
Right before taking the stage, Sanders met one-on-one with ABC7 News, appealing to the public for votes ahead of California's primary.
"I think that my agenda of raising the minimum wage to 15 bucks an hour, comprehensive immigration reform, addressing the global crisis of climate change, I think that is consistent with where the people of California are," Sanders said.
A message that has resonated with voters from across the country.
"When I see people, and I talk to people who want to stand up and fight and create a government that works for all of us, not just the one percent, that is just very gratifying and inspiring," Sanders said.
ABC7 political analyst Carla Marinucci say it's now or never for the senator.
"He's got to come away with what looks like a win, or his campaign is pretty much done," Marinucci said.
Supporters say they're happy their candidate hasn't given up.
"He's able to rally the people, he knows what to say, he knows how to take the hits, and he knows what matters," said San Jose resident Jesse Kullar.
The focus on California more intense than it ever was before.
A few thousand "Feeling the Bern" in San Jose for 1pm rally. Don't forget sunscreen or you will also get a sunbern. pic.twitter.com/KctQTYmWGK— Matt Keller (@MattKellerABC7) May 18, 2016