Hillary Clinton’s running mate, Sen. Tim Kaine, is being prepped for the vice presidential debate by the husband of a CBS correspondent — just as another CBS correspondent and anchor prepares to moderate the high-stakes political duel.

Bob Barnett, the liberal Washington super-lawyer, has been playing Gov. Mike Pence, Donald Trump’s running mate, in mock debates being held by the staff of Hillary Clinton and Kaine.

Barnett’s wife is Rita Braver, a longtime and influential senior correspondent for “CBS Sunday Morning.”

The debate will be moderated by CBS’ Elaine Quijano, a correspondent and anchor for the network and its internet channel, CBSN.

“I believe it could be perceived as a conflict of interest considering Barnett’s many close relationships with CBS (not just Rita),” said ex-CBS correspondent Sharyl Attkisson.

“People will wonder whether Barnett has the benefit of inside information that gives Kaine an advantage over Pence. This doesn’t mean to imply Barnett or Kaine would do anything improper. But surely the question will be raised, and that’s why it’s usually best avoided if possible.”

Attkisson added, “Rita and Bob are work friends of mine and good people. Rita is a good reporter. Bob is highly regarded at CBS. I don’t think either of them would intentionally do anything improper.”

The VP debate is scheduled for Tuesday at Longwood University in Farmville, Virginia.