WASHINGTON —

The Republican National Committee charged Monday that NBC and CNN are promoting a potential presidential candidacy by Hillary Rodham Clinton, threatening to blackball them from future Republican primary debates if they air upcoming programs on the former secretary of state.

Reince Priebus, RNC chairman, called a planned NBC miniseries on Clinton and a CNN documentary on the former first lady an “extended commercial” for a future Clinton presidential campaign.

In separate letters to the networks, he urged them to cancel “this political ad masquerading as an unbiased production.”

Clinton has not yet said whether she’ll run for president again in 2016 but her future remains the subject of wide speculation in political circles and beyond.

The primary debates typically provide a ratings boost for the networks and are highly-coveted as the presidential campaign unfolds.

In making the charge, the RNC was raising a common complaint among Republican activists that news and entertainment industries favor Democratic candidates. Republicans have also used a potential Clinton campaign as a fundraising tool in recent months as both parties begin to assess the crop of candidates to succeed President Obama.