The Fox News anchor Megyn Kelly and the actor Alec Baldwin were at the center of unconfirmed reports this week about programming changes said to be planned at two of the cable news networks.

Ms. Kelly, according to an account first reported this week by the Drudge Report, is expected to get the 9 p.m. weeknight show on Fox News, a slot now occupied by Sean Hannity. There has been wide speculation about where Fox planned to place Ms. Kelly, a rising star at the network, since the network’s chief executive, Roger Ailes, announced that she would definitely join the Fox News prime-time lineup.

MSNBC is said to be planning a show for Mr. Baldwin that would be broadcast once a week on Fridays at 10 p.m., according to the Mediaite Web site, which first reported the item on Thursday.

For the moment at least, the moves remain unconfirmed. The role for Ms. Kelly is considered plausible, because it is consistent with versions of Fox’s plans for prime-time adjustments that have emerged in the last several weeks.

Fox responded to the online speculation with a statement: “We will neither confirm nor deny any programming schedule changes. As previously stated, the network has signed long-term deals with Megyn Kelly, Bret Baier, Shepard Smith, Bill O’Reilly, Sean Hannity and Greta Van Susteren.”

Mr. Ailes also appeared at a business conference with Neil Cavuto, an anchor on the Fox Business Network, on Thursday and to.