The campaign lasted the rest of the spring, all summer, and into the autumn. The election administered by the National Labor Relations Board is the concluding event of a series that gives the organizing campaign a typical form. Many campaigns wind up with defeat or triumph by very close margins. The organizer in charge of a campaign usually takes upon him the responsibility of acquiring the necessary proportion of signatures, and this may take a few weeks. The campaign thus gets spread out over a network of intergroup relations while it extends over stretches of time. Perhaps the most fruitful hours of fieldwork, in regard to the organizing campaign, are spent at field headquarters, usually located in an office in a union hall or in a suite of motel rooms, and not many miles from the factory under organizing attack.