Texas Gov. Greg Abbott received an additional $4 million campaign donation from a prominent school voucher proponent just after the March primary elections, boosting his successful effort to toss out GOP House members who opposed his school choice plans, according to new state ethics reports filed on Monday.

The April 3 donation by TikTok investor Jeff Yass brings the Pennsylvania billionaire megadonor’s contributions to Abbott to more than $10 million since last fall. Yass previously donated $6 million in December, which Abbott described as the largest single donation in Texas campaign history.

Yass has donated more than $200 million in the last decade to federal and state candidates and to groups to promote school choice.

The mandatory campaign finance reports filed Monday by the Republican governor as well as by his campaign at the Texas Ethics Commission offer the first comprehensive look into Abbott’s money machine during two heated election cycles earlier this year.

Abbott and his campaign’s political action committee, Texans for Greg Abbott, were only required to file them in January and July because he wasn’t on the ballot.

An email requesting comment from Abbott’s campaign was not immediately answered early Tuesday. Staff at his Capitol office referred questions to the campaign.

Public education advocates have criticized Yass’ heavy-handed funding of Abbott’s campaign, saying that as an out-of-state activist he has too much influence.

Earlier this year, Yass, through a spokesman, provided a brief statement to The Dallas Morning News on his supporting school choice: “School spending has doubled in real terms over the last 30 years and results have gotten worse, particularly in urban districts. The time for choice and competition is now. I plan to support pro-school choice candidates in any state.”

The Monday reports show Abbott’s officeholder account, which received the Yass donations, spent nearly $12 million during the first six months of the year. Most of that was on travel, events and advertising. More than a quarter of that was spent on advertising, polling and consulting in April and May alone, according to Abbott’s 190-page officeholder report.

Throughout the primary and runoff season,10 mostly rural incumbent House Republicans were fighting off attacks from Abbott and his pro-voucher allies after the lawmakers repeatedly blocked legislation that would have created education savings accounts, or ESAs.

Proponents — including Lt. Gov. Dan Patrick — argue that public schools in some areas of the state are failing, so parents need help paying for alternatives. The ESAs would allow for taxpayer money to be spent on private schools.

Opponents argue that private schools are unregulated and sometimes exclude students with special needs. They want public schools to be fully funded.

Many rural Republicans argue that ESAs would drain the funding from their schools — the largest employer in many rural counties — and hurt their communities, particularly because many of those areas don’t have private schools.

Before the March primary, Abbott and his campaign gave more than $6 million to House candidates, many of whom were challenging those incumbents. Then he donated another $2.3 million during the next two months for the May runoffs to defeat those who survived in March, according to earlier campaign reports.

Abbott’s well-funded victories in those contests appear to have given him the votes he needs to pass school choice during the next regular session, which starts in January 2025. His candidates must survive the general election in November.

The legislative effort to create the state’s first voucherlike program appears to be already underway.

On Tuesday, Texas House Public Education Committee Chair Brad Buckley, R-Killeen, scheduled a hearing on a range of issues, including the viability of ESAs, for Aug. 12 – the same week many major Texas districts start the new school year.

Meanwhile, the Abbott campaign PAC maintains a healthy war chest of more than $51 million as of June 30, according to the reports. The PAC received nearly $25 million in donations since January.

The political action committee’s 29,292-page report is brimming with donations of $1 and $2, although individual contributions of $110 or less that are not received electronically are not required to be itemized. Online donations must be listed individually even if they are under $1.

Aarón Torres contributed to this report.