Eminem's Lose Yourself, which appeared in the rapper's 2002 film 8 Mile, is one of his biggest hits.
"We believe there is a very strong verdict and warning for people around the world of soundalics or use", said Adam Simpson, a Sydney lawyer representing eight style editors Mile Eminem.
The National Party used a track with a similar melody and rhythm to Eminem's Lose Yourself in an election advert.
In his 132-day sentence, Cull says that "Eminem" as a copy sounds and copies reproduce, it is "lost".
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The judge based the amount of the award on a hypothetical licence fee that the party might have paid to use the song - although Eight Mile Style rarely grants permission to use Lose Yourself in advertising.
The backing track used in the National Party's advert, which appeared more than 100 times on TV during the 2014 campaign, had been taken from a library made by production music company Beatbox.
The party's president Peter Goodfellow said: "We purchased the piece of production music from a reputable Australian-based music production library, who had purchased it from a USA supplier".