Charter school supporters have dropped an unprecedented $25 million into Marshall Tuck’s campaign to become California’s next State Superintendent of Public Instruction.

His opponent Tony Thurmond is far behind in fundraising, having raised less than half that amount, “only” $10 million, mostly from educators.

“Independent committees supporting Tuck have raised $20.4 million as of Monday compared to $7 million by a committee supporting Thurmond. Likewise, Tuck is ahead in direct contributions to his campaign, having raised $4.2 million compared to Thurmond’s $2.8 million, as of the most recent campaign finance filing deadline Sept. 22.

“Thurmond is a former social worker, school board member and council member in Richmond. Tuck is the former president of Green Dot Public Schools, a charter school organization based in Los Angeles, and CEO of the Partnership for Los Angeles Schools, a district-city initiative that runs 18 district schools. Most recently he’s worked for a nonprofit to develop effective teachers and principals.

“As early voting ballots are mailed to California voters this week, record levels of funding continue to pour into the contest primarily from advocates of charter school expansion who favor Tuck and organized labor groups backing Thurmond. Independent committees that support the candidates combined to raise almost $12 million in the last three weeks alone, with Tuck’s supporters accounting for the vast majority of that money.”

Tuck is a financier who entered education as a charter school executive. The big money behind him anticipates that he will continue the privatization of public schools and the expansion of charter chains into suburban and rural areas. Tuck is supported by Eli Broad, Reed Hastings, the Walton Family, and other prominent billionaires.

Thurmond is a social worker and legislator who has devoted his career to helping children. He has been endorsed by the California Teachers Association, the Los Angeles Times, and the California Democratic Party.

This election will test the proposition of whether billionaires can buy a statewide election for a key education leadership position.