Campaigning rhymes with:
abstaining, ascertaining, attaining, caning, chaining, complaining, constraining, containing, deigning, detaining, disdaining, draining, entertaining, explaining, feigning, gaining, haning, laning, maintaining, obtaining, ordaining, overtraining, pertaining, raining, refraining, regaining, reigning, reining, remaining, restraining, retaining, retraining, staining, straining, sustaining, training, waning
Campaigning sounds like:
campaign's, campaigns, campesinos, canvassing, champagnes, composing, confessing, confessions, confusing, confusions