THE SUPPLY-SIDE PRESIDENT?

Publishing magnate Malcolm ("Steve") Forbes Jr., an unreconstructed proponent of Reaganomics, plans to join the crowded race for the GOP presidential nomination on Friday. "I'm going to do it," he told The Associated Press in a telephone interview from his office in Bedminster, N.J. "The need is there." The millionaire's political experience, Richard Brookhiser notes, "so far consists of advising Christine Todd Whitman in her successful run for the New Jersey governorship in 1993. So he takes comfort in the example of Wendell Willkie, the utilities executive and political neophyte who grabbed the GOP nomination in 1940." Forbes reportedly plans to spend $10 million (or 5 percent) of his personal fortune on the campaign. MOVE OVER, T. REX: