For George M. Cohan it suffices to say that this is his first picture and maybe his last. For pictures such as these, light and frothy, he brings nothing to the screen which it has not already at hand.
With Claudette Colbert wasted in an inconsequential role, it leaves everything up to Jimmy Durante. They evidently just let Durante alone and allowed him to play bis scenes about as he pleased.
The story [from a novel by G. F Worts] has Cohan playing a dual rule. As T. K Blair he's the colorless banker whom his party would make president but fears it can't because of his lack of personality. In playing Peter Varney, the medicine show man, Cohan is unquestionably happier with circumstances bringing about his substituting for Blair during the pre-election campaign. Mixed into this is the girl (Colbert) who senses something different when in the presence of Varney, but who can't figure it out. With Blair planning to rid himself of Varney, Colbert intervenes and it's the banker who's whisked from the scene on election day and Varney coasts to the White House.
Meanwhile there's Durante as Varney's helper who finally gains entrance to the convention hall and by the simple expedient of adapting his medicine show technique to the occasion stampedes his pal into the nomination. It's the high action mark of the film, done in rhythm and lyrics [by Richard Rodgers and Lorenz Hart] with the assembled delegates acting as the chorus.
Variety
Pauline Kael
Taurog clearly did not think Cohan could carry off a ballad, so Rodgers and Hart came up with a song the birds, bees, and frogs could "sing" originally the camera was to hold on Colbert while a lady frog sang Colbert's "thoughts" and then on Cohan while a male frog "replied" .Then birds and bees-clunky models that wouldn't have fooled a ten-year-old kid even then-would adjure him to Give Her A Kiss.
In the final print, the verse was cut, leaving the whole scene looking
like an afrerthought. Colbert is stranded; Cohan merely looks uncomfortable.