Associated Press

Former GOP vice presidential candidate turned media star Sarah Palin said that all of her scheduled interviews on Fox News had been canceled for Wednesday evening, posting on her Facebook page that she was “disappointed” by the decision.

Ms. Palin, a regular commentator on Fox, said that she had been looking forward to highlighting Arizona Sen. John McCain’s “positive contributions” to the country in her appearances on the cable news channel. Four years ago, Mr. McCain was the GOP presidential candidate and selected Ms. Palin to join him on the Republican ticket.

Mr. McCain is slated to speak later Wednesday night at the Republican National Convention in Tampa, where he is expected to deliver a fierce criticism of President Barack Obama’s foreign policy record. Also Wednesday night, Rep. Paul Ryan will be delivering the big speech of day and the biggest of his political career — accepting the Republican Party’s nomination to be its vice presidential candidate…