Senator John McCain says published reports about his relationship with a lobbyist amount to a "smear campaign."
He plans to talk about it Thursday at a news conference.
The reports in the New York Times and Washington Post Thursday deal with McCain's 2000 try for the Republican presidential nomination.
The papers report that aides worried about the appearance of McCain having close ties to a lobbyist who had business before the Senate Commerce Committee on which he served.
Neither report contains any allegation of a romantic connection. The papers do say McCain and the women each deny having a romantic relationship.
The stories allege that McCain wrote letters and pushed legislation involving television station ownership that would have benefited her clients.