GOPAC, an organization that seeks to build a Republican bench of candidates, released a 30-second television ad on Wednesday in support of state Rep. Chad Fincher, a candidate in the upcoming Alabama House special election.

The $30,000 cable and broadcast television ad buy touts Fincher’s conservative record of taking on teachers unions.

“Rep. Fincher has a long record of fighting for conservative policies and sound economic principles,” GOPAC Chairman Frank Donatelli said in a news release. “We know that he is a tested leader and does not back down from a fight against liberal special interests. We need his continued leadership in Washington.”

Fincher is one of several top-tier candidates among a crowded GOP field vying for Alabama’s 1st District. Others include newspaper columnist Quin Hillyer, who received the support of former Sen. Rick Santorum, R-Pa., former state Sen. Bradley Byrne, who lost a gubernatorial bid in Alabama in 2010, and former Republican National Committee aide Wells Griffith.

The 1st District special was sparked when Rep. Jo Bonner, R-Ala., resigned in July to take a job with the University of Alabama system.

The special-election primary will be held Sept. 24. If necessary, a primary runoff will be held Nov. 5.

Alabama’s 1st District is rated a Safe Republican seat by Rothenberg Political Report/Roll Call.