Since 1952—when New York ad man Rosser Reeves convinced GOP presidential candidate Dwight Eisenhower to run television ads with a snappy jingle, "You like Ike, I like Ike, Everybody likes Ike"—campaigns have spent most of their budgets on TV and radio. But in the year ahead, smart campaigns will devote a good deal less money to running 30- second TV ads and a good deal more to using the Internet to organize, persuade, motivate and raise funds.