That did not take long.
From today's San Francisco Chronicle:
A socially conservative organization based in Sacramento filed documents Friday afternoon to start a voter referendum on a controversial law that adds the contributions of lesbian, gay, bisexual and transgender Americans to school instruction.
The proponent of the proposed referendum, Paulo Sibaja, filed a request for a title and summary with the attorney general's office. Sibaja said he acted on behalf of the Capitol Resource Institute, which had officially opposed the bill throughout the legislative process before Gov. Jerry Brown signed it Thursday. Sibaja is the legislative director of that organization.
The Capitol Resource Institute is a hard-line, socially conservative organization that has long opposed efforts in California to expand rights for the LGBT population. Backers eventually would have to collect 433,971 signatures to allow voters to decide whether to keep the law in place or reject it.
Sibaja said that a coalition has formed behind the proposed measure, though he would not name the other members. He said a news conference Wednesday would give more details. When asked how the group planned to fund the referendum, he said, "That's what the press conference will be about."