Hit with the latest polling numbers, the governor was quick to point out that Yes on 30 still leads the opposition, but not by as much.
Prop 30 asks voters to approve a temporary tax hike on incomes over $250,000 and a sales tax hike for the next four years.
"The average person will pay a quarter of a cent; you buy a sandwich for $4, you pay one more penny," Brown said.
Brown says the revenue will prevent $6 billion in cuts to state funded schools.
But the latest polling numbers show Prop 30's support has dropped since September. No on 30 political ads play on the public's distrust of government spending.
The Howard Jarvis Taxpayers Association is leading that charge.
"Stop trying to blackmail people saying we're not going to fund education if you don't give us more money," Howard Jarvis Taxpayers Association Executive Director Kris Vosburgh said.
But Brown says the money is earmarked for education and that's where it'll be spent.
"The teachers, they're for it and they believe it and as governor I'm telling you that money is going there and over the next two years I'll be governor and I'll make sure it does," Brown said.
Brown and his Yes on 30 campaign have raised more than $30 million for their political ads. The No on 30 campaign has raised $20 million, $11 million in one donation this week from an anonymous group of donors headquartered in Arizona. The governor calls it the largest anonymous political donation in the state's history.
"And I just learned this morning that the state of California is suing and going to court to force the disclosure of who are these donors from Arizona or wherever they may be coming from off shore who knows," Brown said.
And the governor is correct -- A judge has ruled an Arizona group must explain, by Monday, why it won't reveal who put up the money they've contributed to defeat California's Proposition 30. The Fair Political Practices Commission claims the PAC is required to reveal the names of contributors. But the group's lawyer says the constitution allows people to express political opinions through donations.
Brown suspects the 11 million is coming from rich folks in California who don't want to pay the 1-3 percent increase in state income tax.