Bob presents a comedic mixture of topical satire and an ever-popular attraction - politics and pretty girls.
The plot puts Bob in the dual role of Presidential candidate Gaylord Goodfellow and his lookalike, a cab driver named Irving.
When Goodfellow finds flower power more appealing than the campaign trail, he drops out of the race. Panicky party bosses press Irving into service as a replacement. As the masquerade progresses, Irving learns that Gaylord has made one very big promise - marriage to six lovely ladies.
The lovely ladies are Carroll Baker, Vikki Carr (who sings "It Must Be Him"), Cyd Charisse (in a dance number to "I Have Myself a True Love"), Angie Dickinson, Zsa Zsa Gabor and Jill St. John.