The state teachers' organization, the Alabama Education Association, has become the biggest contributor to Democrat Parker Griffith's campaign for governor.
Griffith filed a campaign finance report late Thursday afternoon showing he had received a $300,000 contribution from AEA. Prior to the contribution, he was reporting $25,050 in his campaign account.
The contribution comes after AEA's political action committee reported borrowing $700,000 from a bank on Sept. 4.
AEA helped Republican Robert Bentley get elected governor four years ago by funding ads attacking his opponent in the GOP runoff, Bradley Byrne. Since then, AEA has battled the Republican leadership in Montgomery over school funding, changes in teacher tenure and other issues.
Griffith and Bentley face off Nov. 4. Bentley recently reported having $3.3 million in his campaign account.