Crossword Genius

Platform about vice-president? (5)

Ross

I believe the answer is:

davis

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'platform' is the definition.
Both the definition and answer are singular nouns.
Perhaps there's a link between them I don't understand?

I don't understand how the remainder of the clue works.

Can you help me to learn more?

(Other definitions for davis that I've seen before include "Bette --; Miles --" , "Miles, perhaps" .)

I've seen this clue in the Sydney Morning Herald.
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