Donald Trump Donald John TrumpBubba Wallace to be driver of Michael Jordan, Denny Hamlin NASCAR team Graham: GOP will confirm Trump's Supreme Court nominee before the election Southwest Airlines, unions call for six-month extension of government aid MORE is trailing Hillary Clinton Hillary Diane Rodham ClintonJoe Biden looks to expand election battleground into Trump country Biden leads Trump by 12 points among Catholic voters: poll The Hill's Campaign Report: Biden goes on offense MORE by 4 points, according to a poll done by an organization whose chairman is running Trump's campaign.

ADVERTISEMENT

Clinton (D) has 44 percent support among likely voters nationally to Trump's 40 percent, according to a Breitbart News/Gravis Marketing survey released Friday.

Stephen Bannon took a leave of absence as chairman of Breitbart News to work as the Trump campaign’s chief executive last month.

The Breitbart poll shows Clinton extending her lead. She led Trump by 3 points in a version of the poll earlier this month, and by 1 point in an August edition.

Breitbart News/Gravis Marketing conducted its poll of 1,560 likely voters on Sept. 20. It has a 2.5 percentage point margin of error.

Trump appointed Bannon as his campaign’s chief executive during an overhaul of his team last month. He added Kellyanne Conway as campaign manager at the same time.

Clinton has repeatedly linked Bannon to the hard-core conservatism of the “alt-right” movement as a means of criticizing Trump’s ideology.

Polls have shown Clinton maintaining a lead of about 3 points nationally, according to a RealClearPolitics average of polls.