Former Ambassador John BoltonJohn Robert BoltonGOP senator says Iran needs to 'stop acting like an outlaw' Iraq War looms over Trump battle with Iran Overnight Defense: Trump officials say efforts to deter Iran are working | Trump taps new Air Force secretary | House panel passes defense bill that limits border wall funds MORE could be the next on-air personality to leave Fox News in favor of a presidential run.

A source at the cable news channel told The Washington Examiner on Monday that Bolton could leave the station to avoid a conflict of interest ahead of a potential presidential run.

That would make him the latest Republican to leave Fox News to reignite a political career.

Over the weekend, former Arkansas Gov. Mike Huckabee (R) signed off from his popular television show to explore a possible run for the White House in 2016.

In November, Fox News cut ties with Tea Party favorite Ben Carson, who is also considering a run for the White House. The cable news outlet has in previous cycles ended ties with former Sen. Scott Brown (R-Mass.) ahead of his unsuccesful bid for Senate in New Hampshire in 2014, as well as former Speaker Newt Gingrich (Ga.) before he ran for president in 2012.

Bolton, who is a commentator on Fox News but does not have his own show, told the Daily Caller in November that he was considering a run for president out of concern that candidates from both parties were too weak on foreign policy. Bolton was the U.S. ambassador to the United Nations under President George W. Bush.

“Obviously, if the Democrats nominate Hillary, her principle qualification is her time as secretary of state," he said. "So being able to dissect and explain to the voters why she fails as a leader, I think is going to be critical for whomever is interested in the Republican nomination.”

Bolton also seemed to take a swipe at Sen. Rand Paul (R-Ky.), a potential Republican presidential contender, saying he was troubled by the growing strain of foreign policy “isolationism” within the GOP.

Sen. Lindsey Graham (R-S.C.) has also said he will consider launching a presidential bid if he believes the Republican candidates are not strong enough on foreign policy.

Neither Bolton nor Graham are registering in most polls right now of GOP contenders.

Bolton told the Daily Caller he does not have a timetable for a decision on whether he will run.